--- _id: '5576' author: - first_name: Felix full_name: Wex, Felix last_name: Wex - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Dirk full_name: Neumann, Dirk last_name: Neumann citation: ama: 'Wex F, Schryen G, Neumann D. Decision Modeling for Assignments of Collaborative Rescue Units during Emergency Response. In: Proceedings of the 46th Hawaii International Conference on System Science. ; 2013.' apa: Wex, F., Schryen, G., & Neumann, D. (2013). Decision Modeling for Assignments of Collaborative Rescue Units during Emergency Response. In Proceedings of the 46th Hawaii International Conference on System Science. bibtex: '@inproceedings{Wex_Schryen_Neumann_2013, title={Decision Modeling for Assignments of Collaborative Rescue Units during Emergency Response}, booktitle={Proceedings of the 46th Hawaii International Conference on System Science}, author={Wex, Felix and Schryen, Guido and Neumann, Dirk}, year={2013} }' chicago: Wex, Felix, Guido Schryen, and Dirk Neumann. “Decision Modeling for Assignments of Collaborative Rescue Units during Emergency Response.” In Proceedings of the 46th Hawaii International Conference on System Science, 2013. ieee: F. Wex, G. Schryen, and D. Neumann, “Decision Modeling for Assignments of Collaborative Rescue Units during Emergency Response,” in Proceedings of the 46th Hawaii International Conference on System Science, 2013. mla: Wex, Felix, et al. “Decision Modeling for Assignments of Collaborative Rescue Units during Emergency Response.” Proceedings of the 46th Hawaii International Conference on System Science, 2013. short: 'F. Wex, G. Schryen, D. Neumann, in: Proceedings of the 46th Hawaii International Conference on System Science, 2013.' date_created: 2018-11-14T11:14:56Z date_updated: 2022-01-06T07:02:00Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-07T12:00:30Z date_updated: 2018-12-13T15:12:05Z file_id: '6049' file_name: ERS_HICSS2013_revised_v11-ACM [number].pdf file_size: 394101 relation: main_file file_date_updated: 2018-12-13T15:12:05Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: Proceedings of the 46th Hawaii International Conference on System Science status: public title: Decision Modeling for Assignments of Collaborative Rescue Units during Emergency Response type: conference user_id: '61579' year: '2013' ... --- _id: '5637' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Revisiting IS Business Value Research: What we already know, what we still need to know, and how we can get there. European Journal of Information Systems (EJIS). 2013;22(2):139-169.' apa: 'Schryen, G. (2013). Revisiting IS Business Value Research: What we already know, what we still need to know, and how we can get there. European Journal of Information Systems (EJIS), 22(2), 139–169.' bibtex: '@article{Schryen_2013, title={Revisiting IS Business Value Research: What we already know, what we still need to know, and how we can get there}, volume={22}, number={2}, journal={European Journal of Information Systems (EJIS)}, author={Schryen, Guido}, year={2013}, pages={139–169} }' chicago: 'Schryen, Guido. “Revisiting IS Business Value Research: What We Already Know, What We Still Need to Know, and How We Can Get There.” European Journal of Information Systems (EJIS) 22, no. 2 (2013): 139–69.' ieee: 'G. Schryen, “Revisiting IS Business Value Research: What we already know, what we still need to know, and how we can get there,” European Journal of Information Systems (EJIS), vol. 22, no. 2, pp. 139–169, 2013.' mla: 'Schryen, Guido. “Revisiting IS Business Value Research: What We Already Know, What We Still Need to Know, and How We Can Get There.” European Journal of Information Systems (EJIS), vol. 22, no. 2, 2013, pp. 139–69.' short: G. Schryen, European Journal of Information Systems (EJIS) 22 (2013) 139–169. date_created: 2018-11-14T14:31:37Z date_updated: 2022-01-06T07:02:16Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-07T11:59:54Z date_updated: 2018-12-13T15:11:53Z file_id: '6048' file_name: EJIS-PAPER.pdf file_size: 792102 relation: main_file file_date_updated: 2018-12-13T15:11:53Z has_accepted_license: '1' intvolume: ' 22' issue: '2' language: - iso: eng oa: '1' page: 139-169 publication: European Journal of Information Systems (EJIS) status: public title: 'Revisiting IS Business Value Research: What we already know, what we still need to know, and how we can get there' type: journal_article user_id: '61579' volume: 22 year: '2013' ... --- _id: '5680' author: - first_name: Tim full_name: Püschel, Tim last_name: Püschel - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Diana full_name: Hristova, Diana last_name: Hristova - first_name: Dirk full_name: Neumann, Dirk last_name: Neumann citation: ama: 'Püschel T, Schryen G, Hristova D, Neumann D. Cloud Service Revenue Management. In: European Conference on Information Systems. ; 2012.' apa: Püschel, T., Schryen, G., Hristova, D., & Neumann, D. (2012). Cloud Service Revenue Management. In European Conference on Information Systems. bibtex: '@inproceedings{Püschel_Schryen_Hristova_Neumann_2012, title={Cloud Service Revenue Management}, booktitle={European Conference on Information Systems}, author={Püschel, Tim and Schryen, Guido and Hristova, Diana and Neumann, Dirk}, year={2012} }' chicago: Püschel, Tim, Guido Schryen, Diana Hristova, and Dirk Neumann. “Cloud Service Revenue Management.” In European Conference on Information Systems, 2012. ieee: T. Püschel, G. Schryen, D. Hristova, and D. Neumann, “Cloud Service Revenue Management,” in European Conference on Information Systems, 2012. mla: Püschel, Tim, et al. “Cloud Service Revenue Management.” European Conference on Information Systems, 2012. short: 'T. Püschel, G. Schryen, D. Hristova, D. Neumann, in: European Conference on Information Systems, 2012.' date_created: 2018-11-14T15:40:59Z date_updated: 2022-01-06T07:02:31Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:00:25Z date_updated: 2018-12-13T15:14:33Z file_id: '6177' file_name: Proceedings version.pdf file_size: 476955 relation: main_file file_date_updated: 2018-12-13T15:14:33Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: European Conference on Information Systems status: public title: Cloud Service Revenue Management type: conference user_id: '61579' year: '2012' ... --- _id: '5683' author: - first_name: Fabian full_name: Lang, Fabian last_name: Lang - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Andreas full_name: Fink, Andreas last_name: Fink citation: ama: 'Lang F, Schryen G, Fink A. Elicitating, modeling, and processing uncertain human preferences for software agents in electronic negotiations: An empirical study. In: International Conference on Information Systems. ; 2012.' apa: 'Lang, F., Schryen, G., & Fink, A. (2012). Elicitating, modeling, and processing uncertain human preferences for software agents in electronic negotiations: An empirical study. In International Conference on Information Systems.' bibtex: '@inproceedings{Lang_Schryen_Fink_2012, title={Elicitating, modeling, and processing uncertain human preferences for software agents in electronic negotiations: An empirical study}, booktitle={International Conference on Information Systems}, author={Lang, Fabian and Schryen, Guido and Fink, Andreas}, year={2012} }' chicago: 'Lang, Fabian, Guido Schryen, and Andreas Fink. “Elicitating, Modeling, and Processing Uncertain Human Preferences for Software Agents in Electronic Negotiations: An Empirical Study.” In International Conference on Information Systems, 2012.' ieee: 'F. Lang, G. Schryen, and A. Fink, “Elicitating, modeling, and processing uncertain human preferences for software agents in electronic negotiations: An empirical study,” in International Conference on Information Systems, 2012.' mla: 'Lang, Fabian, et al. “Elicitating, Modeling, and Processing Uncertain Human Preferences for Software Agents in Electronic Negotiations: An Empirical Study.” International Conference on Information Systems, 2012.' short: 'F. Lang, G. Schryen, A. Fink, in: International Conference on Information Systems, 2012.' date_created: 2018-11-14T15:44:07Z date_updated: 2022-01-06T07:02:32Z department: - _id: '277' extern: '1' language: - iso: eng publication: International Conference on Information Systems status: public title: 'Elicitating, modeling, and processing uncertain human preferences for software agents in electronic negotiations: An empirical study' type: conference user_id: '61579' year: '2012' ... --- _id: '5688' author: - first_name: Christian full_name: Bodenstein, Christian last_name: Bodenstein - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Dirk full_name: Neumann, Dirk last_name: Neumann citation: ama: 'Bodenstein C, Schryen G, Neumann D. Energy-Aware Workload Management Models for Operating Cost Reduction in Data Centers. European Journal of Operational Research : EJOR. 2012;222(1):157-167.' apa: 'Bodenstein, C., Schryen, G., & Neumann, D. (2012). Energy-Aware Workload Management Models for Operating Cost Reduction in Data Centers. European Journal of Operational Research : EJOR, 222(1), 157–167.' bibtex: '@article{Bodenstein_Schryen_Neumann_2012, title={Energy-Aware Workload Management Models for Operating Cost Reduction in Data Centers}, volume={222}, number={1}, journal={European Journal of Operational Research : EJOR}, publisher={Elsevier}, author={Bodenstein, Christian and Schryen, Guido and Neumann, Dirk}, year={2012}, pages={157–167} }' chicago: 'Bodenstein, Christian, Guido Schryen, and Dirk Neumann. “Energy-Aware Workload Management Models for Operating Cost Reduction in Data Centers.” European Journal of Operational Research : EJOR 222, no. 1 (2012): 157–67.' ieee: 'C. Bodenstein, G. Schryen, and D. Neumann, “Energy-Aware Workload Management Models for Operating Cost Reduction in Data Centers,” European Journal of Operational Research : EJOR, vol. 222, no. 1, pp. 157–167, 2012.' mla: 'Bodenstein, Christian, et al. “Energy-Aware Workload Management Models for Operating Cost Reduction in Data Centers.” European Journal of Operational Research : EJOR, vol. 222, no. 1, Elsevier, 2012, pp. 157–67.' short: 'C. Bodenstein, G. Schryen, D. Neumann, European Journal of Operational Research : EJOR 222 (2012) 157–167.' date_created: 2018-11-14T15:47:32Z date_updated: 2022-01-06T07:02:33Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T14:54:18Z date_updated: 2018-12-13T15:13:35Z file_id: '6172' file_name: 1-s2.0-S0377221712002810-main.pdf file_size: 520239 relation: main_file file_date_updated: 2018-12-13T15:13:35Z has_accepted_license: '1' intvolume: ' 222' issue: '1' language: - iso: eng oa: '1' page: 157-167 publication: 'European Journal of Operational Research : EJOR' publisher: Elsevier status: public title: Energy-Aware Workload Management Models for Operating Cost Reduction in Data Centers type: journal_article user_id: '61579' volume: 222 year: '2012' ... --- _id: '5578' author: - first_name: Felix full_name: Wex, Felix last_name: Wex - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Dirk full_name: Neumann, Dirk last_name: Neumann citation: ama: Wex F, Schryen G, Neumann D. A Fuzzy Decision Support Model for Natural Disaster Response under Informational Uncertainty. International Journal of Information Systems for Crisis Response and Management. 2012;4(3):23-41. apa: Wex, F., Schryen, G., & Neumann, D. (2012). A Fuzzy Decision Support Model for Natural Disaster Response under Informational Uncertainty. International Journal of Information Systems for Crisis Response and Management, 4(3), 23–41. bibtex: '@article{Wex_Schryen_Neumann_2012, title={A Fuzzy Decision Support Model for Natural Disaster Response under Informational Uncertainty}, volume={4}, number={3}, journal={International Journal of Information Systems for Crisis Response and Management}, publisher={IGI Publ.}, author={Wex, Felix and Schryen, Guido and Neumann, Dirk}, year={2012}, pages={23–41} }' chicago: 'Wex, Felix, Guido Schryen, and Dirk Neumann. “A Fuzzy Decision Support Model for Natural Disaster Response under Informational Uncertainty.” International Journal of Information Systems for Crisis Response and Management 4, no. 3 (2012): 23–41.' ieee: F. Wex, G. Schryen, and D. Neumann, “A Fuzzy Decision Support Model for Natural Disaster Response under Informational Uncertainty,” International Journal of Information Systems for Crisis Response and Management, vol. 4, no. 3, pp. 23–41, 2012. mla: Wex, Felix, et al. “A Fuzzy Decision Support Model for Natural Disaster Response under Informational Uncertainty.” International Journal of Information Systems for Crisis Response and Management, vol. 4, no. 3, IGI Publ., 2012, pp. 23–41. short: F. Wex, G. Schryen, D. Neumann, International Journal of Information Systems for Crisis Response and Management 4 (2012) 23–41. date_created: 2018-11-14T11:16:03Z date_updated: 2022-01-06T07:02:00Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:01:01Z date_updated: 2018-12-13T15:14:45Z file_id: '6178' file_name: Revision - Wex et al.pdf file_size: 377121 relation: main_file file_date_updated: 2018-12-13T15:14:45Z has_accepted_license: '1' intvolume: ' 4' issue: '3' language: - iso: eng oa: '1' page: 23-41 publication: International Journal of Information Systems for Crisis Response and Management publisher: IGI Publ. status: public title: A Fuzzy Decision Support Model for Natural Disaster Response under Informational Uncertainty type: journal_article user_id: '61579' volume: 4 year: '2012' ... --- _id: '5579' author: - first_name: Felix full_name: Wex, Felix last_name: Wex - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Dirk full_name: Neumann, Dirk last_name: Neumann citation: ama: 'Wex F, Schryen G, Neumann D. Operational Emergency Response under Informational Uncertainty: A Fuzzy Optimization Model for Scheduling and Allocating Rescue Units. In: International Conference on Information Systems for Crisis Response and Management (ISCRAM) 2012. ; 2012.' apa: 'Wex, F., Schryen, G., & Neumann, D. (2012). Operational Emergency Response under Informational Uncertainty: A Fuzzy Optimization Model for Scheduling and Allocating Rescue Units. In International Conference on Information Systems for Crisis Response and Management (ISCRAM) 2012.' bibtex: '@inproceedings{Wex_Schryen_Neumann_2012, title={Operational Emergency Response under Informational Uncertainty: A Fuzzy Optimization Model for Scheduling and Allocating Rescue Units}, booktitle={International Conference on Information Systems for Crisis Response and Management (ISCRAM) 2012}, author={Wex, Felix and Schryen, Guido and Neumann, Dirk}, year={2012} }' chicago: 'Wex, Felix, Guido Schryen, and Dirk Neumann. “Operational Emergency Response under Informational Uncertainty: A Fuzzy Optimization Model for Scheduling and Allocating Rescue Units.” In International Conference on Information Systems for Crisis Response and Management (ISCRAM) 2012, 2012.' ieee: 'F. Wex, G. Schryen, and D. Neumann, “Operational Emergency Response under Informational Uncertainty: A Fuzzy Optimization Model for Scheduling and Allocating Rescue Units,” in International Conference on Information Systems for Crisis Response and Management (ISCRAM) 2012, 2012.' mla: 'Wex, Felix, et al. “Operational Emergency Response under Informational Uncertainty: A Fuzzy Optimization Model for Scheduling and Allocating Rescue Units.” International Conference on Information Systems for Crisis Response and Management (ISCRAM) 2012, 2012.' short: 'F. Wex, G. Schryen, D. Neumann, in: International Conference on Information Systems for Crisis Response and Management (ISCRAM) 2012, 2012.' date_created: 2018-11-14T11:16:58Z date_updated: 2022-01-06T07:02:01Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T14:59:44Z date_updated: 2018-12-13T15:14:20Z file_id: '6176' file_name: Proceedings version - 152.pdf file_size: 614029 relation: main_file file_date_updated: 2018-12-13T15:14:20Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: International Conference on Information Systems for Crisis Response and Management (ISCRAM) 2012 status: public title: 'Operational Emergency Response under Informational Uncertainty: A Fuzzy Optimization Model for Scheduling and Allocating Rescue Units' type: conference user_id: '61579' year: '2012' ... --- _id: '5615' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Felix full_name: Wex, Felix last_name: Wex citation: ama: 'Schryen G, Wex F. IS Design Thinking in Disaster Management Research. In: 45th Hawaii International Conference on System Sciences. ; 2012.' apa: Schryen, G., & Wex, F. (2012). IS Design Thinking in Disaster Management Research. In 45th Hawaii International Conference on System Sciences. bibtex: '@inproceedings{Schryen_Wex_2012, title={IS Design Thinking in Disaster Management Research}, booktitle={45th Hawaii International Conference on System Sciences}, author={Schryen, Guido and Wex, Felix}, year={2012} }' chicago: Schryen, Guido, and Felix Wex. “IS Design Thinking in Disaster Management Research.” In 45th Hawaii International Conference on System Sciences, 2012. ieee: G. Schryen and F. Wex, “IS Design Thinking in Disaster Management Research,” in 45th Hawaii International Conference on System Sciences, 2012. mla: Schryen, Guido, and Felix Wex. “IS Design Thinking in Disaster Management Research.” 45th Hawaii International Conference on System Sciences, 2012. short: 'G. Schryen, F. Wex, in: 45th Hawaii International Conference on System Sciences, 2012.' date_created: 2018-11-14T13:59:23Z date_updated: 2022-01-06T07:02:08Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T14:58:56Z date_updated: 2018-12-13T15:14:09Z file_id: '6175' file_name: PID2061325.pdf file_size: 207629 relation: main_file file_date_updated: 2018-12-13T15:14:09Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: 45th Hawaii International Conference on System Sciences status: public title: IS Design Thinking in Disaster Management Research type: conference user_id: '61579' year: '2012' ... --- _id: '5638' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Profis im Netz: Soziale Netzwerke könnten in Unternehmen viel mehr Nutzen stiften - woran hakt es?, in: Die Zeit (12.04.2012). Die Zeit. 2012.' apa: 'Schryen, G. (2012). Profis im Netz: Soziale Netzwerke könnten in Unternehmen viel mehr Nutzen stiften - woran hakt es?, in: Die Zeit (12.04.2012). Die Zeit.' bibtex: '@article{Schryen_2012, title={Profis im Netz: Soziale Netzwerke könnten in Unternehmen viel mehr Nutzen stiften - woran hakt es?, in: Die Zeit (12.04.2012)}, journal={Die Zeit}, author={Schryen, Guido}, year={2012} }' chicago: 'Schryen, Guido. “Profis Im Netz: Soziale Netzwerke Könnten in Unternehmen Viel Mehr Nutzen Stiften - Woran Hakt Es?, In: Die Zeit (12.04.2012).” Die Zeit, 2012.' ieee: 'G. Schryen, “Profis im Netz: Soziale Netzwerke könnten in Unternehmen viel mehr Nutzen stiften - woran hakt es?, in: Die Zeit (12.04.2012),” Die Zeit, 2012.' mla: 'Schryen, Guido. “Profis Im Netz: Soziale Netzwerke Könnten in Unternehmen Viel Mehr Nutzen Stiften - Woran Hakt Es?, In: Die Zeit (12.04.2012).” Die Zeit, 2012.' short: G. Schryen, Die Zeit (2012). date_created: 2018-11-14T14:32:11Z date_updated: 2022-01-06T07:02:16Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:01:42Z date_updated: 2018-12-13T15:15:22Z file_id: '6179' file_name: Zeit_Artikel_16_4_2012.pdf file_size: 260775 relation: main_file file_date_updated: 2018-12-13T15:15:22Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: Die Zeit status: public title: 'Profis im Netz: Soziale Netzwerke könnten in Unternehmen viel mehr Nutzen stiften - woran hakt es?, in: Die Zeit (12.04.2012)' type: journal_article user_id: '61579' year: '2012' ... --- _id: '5639' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Soziale Netzwerke in Unternehmenskontexten - Potentiale und Anforderungen, in: Information Management & Consulting, to appear. IM Information Management & Consulting. 2012.' apa: 'Schryen, G. (2012). Soziale Netzwerke in Unternehmenskontexten - Potentiale und Anforderungen, in: Information Management & Consulting, to appear. IM Information Management & Consulting.' bibtex: '@article{Schryen_2012, title={Soziale Netzwerke in Unternehmenskontexten - Potentiale und Anforderungen, in: Information Management & Consulting, to appear}, journal={IM Information Management & Consulting}, publisher={Information Multimedia Communication imc}, author={Schryen, Guido}, year={2012} }' chicago: 'Schryen, Guido. “Soziale Netzwerke in Unternehmenskontexten - Potentiale Und Anforderungen, in: Information Management & Consulting, to Appear.” IM Information Management & Consulting, 2012.' ieee: 'G. Schryen, “Soziale Netzwerke in Unternehmenskontexten - Potentiale und Anforderungen, in: Information Management & Consulting, to appear,” IM Information Management & Consulting, 2012.' mla: 'Schryen, Guido. “Soziale Netzwerke in Unternehmenskontexten - Potentiale Und Anforderungen, in: Information Management & Consulting, to Appear.” IM Information Management & Consulting, Information Multimedia Communication imc, 2012.' short: G. Schryen, IM Information Management & Consulting (2012). date_created: 2018-11-14T14:33:39Z date_updated: 2022-01-06T07:02:17Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T14:58:26Z date_updated: 2018-12-13T15:13:58Z file_id: '6174' file_name: IM-Artikel.pdf file_size: 467370 relation: main_file file_date_updated: 2018-12-13T15:13:58Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: IM Information Management & Consulting publisher: Information Multimedia Communication imc status: public title: 'Soziale Netzwerke in Unternehmenskontexten - Potentiale und Anforderungen, in: Information Management & Consulting, to appear' type: journal_article user_id: '61579' year: '2012' ... --- _id: '5684' author: - first_name: Fabian full_name: Lang, Fabian last_name: Lang - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Andreas full_name: Fink, Andreas last_name: Fink citation: ama: 'Lang F, Schryen G, Fink A. Automated Negotiations Under Uncertain Preferences. In: Proceedings of the 2011 International Conference on Information Systems (ICIS 2011). ; 2011.' apa: Lang, F., Schryen, G., & Fink, A. (2011). Automated Negotiations Under Uncertain Preferences. In Proceedings of the 2011 International Conference on Information Systems (ICIS 2011). bibtex: '@inproceedings{Lang_Schryen_Fink_2011, title={Automated Negotiations Under Uncertain Preferences}, booktitle={Proceedings of the 2011 International Conference on Information Systems (ICIS 2011)}, author={Lang, Fabian and Schryen, Guido and Fink, Andreas}, year={2011} }' chicago: Lang, Fabian, Guido Schryen, and Andreas Fink. “Automated Negotiations Under Uncertain Preferences.” In Proceedings of the 2011 International Conference on Information Systems (ICIS 2011), 2011. ieee: F. Lang, G. Schryen, and A. Fink, “Automated Negotiations Under Uncertain Preferences,” in Proceedings of the 2011 International Conference on Information Systems (ICIS 2011), 2011. mla: Lang, Fabian, et al. “Automated Negotiations Under Uncertain Preferences.” Proceedings of the 2011 International Conference on Information Systems (ICIS 2011), 2011. short: 'F. Lang, G. Schryen, A. Fink, in: Proceedings of the 2011 International Conference on Information Systems (ICIS 2011), 2011.' date_created: 2018-11-14T15:44:41Z date_updated: 2022-01-06T07:02:32Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T14:57:26Z date_updated: 2018-12-13T15:13:46Z file_id: '6173' file_name: ICIS PROCEEDINGS VERSION.pdf file_size: 606840 relation: main_file file_date_updated: 2018-12-13T15:13:46Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: Proceedings of the 2011 International Conference on Information Systems (ICIS 2011) status: public title: Automated Negotiations Under Uncertain Preferences type: conference user_id: '61579' year: '2011' ... --- _id: '5689' author: - first_name: Christian full_name: Bodenstein, Christian last_name: Bodenstein - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Dirk full_name: Neumann, Dirk last_name: Neumann citation: ama: 'Bodenstein C, Schryen G, Neumann D. Reducing Datacenter Energy Usage through Efficient Job Allocation. In: Proceedings of the 19th European Conference on Information Systems (ECIS 2011). ; 2011.' apa: Bodenstein, C., Schryen, G., & Neumann, D. (2011). Reducing Datacenter Energy Usage through Efficient Job Allocation. In Proceedings of the 19th European Conference on Information Systems (ECIS 2011). bibtex: '@inproceedings{Bodenstein_Schryen_Neumann_2011, title={Reducing Datacenter Energy Usage through Efficient Job Allocation}, booktitle={Proceedings of the 19th European Conference on Information Systems (ECIS 2011)}, author={Bodenstein, Christian and Schryen, Guido and Neumann, Dirk}, year={2011} }' chicago: Bodenstein, Christian, Guido Schryen, and Dirk Neumann. “Reducing Datacenter Energy Usage through Efficient Job Allocation.” In Proceedings of the 19th European Conference on Information Systems (ECIS 2011), 2011. ieee: C. Bodenstein, G. Schryen, and D. Neumann, “Reducing Datacenter Energy Usage through Efficient Job Allocation,” in Proceedings of the 19th European Conference on Information Systems (ECIS 2011), 2011. mla: Bodenstein, Christian, et al. “Reducing Datacenter Energy Usage through Efficient Job Allocation.” Proceedings of the 19th European Conference on Information Systems (ECIS 2011), 2011. short: 'C. Bodenstein, G. Schryen, D. Neumann, in: Proceedings of the 19th European Conference on Information Systems (ECIS 2011), 2011.' date_created: 2018-11-14T15:48:00Z date_updated: 2022-01-06T07:02:34Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:04:23Z date_updated: 2018-12-13T15:15:52Z file_id: '6182' file_name: ECIS_2011_-_REDUCING_DATACENTER_ENERGY_USAGE_THROUGH_EFFICIENT_JOB_ALLOCATION.pdf file_size: 210256 relation: main_file file_date_updated: 2018-12-13T15:15:52Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: Proceedings of the 19th European Conference on Information Systems (ECIS 2011) status: public title: Reducing Datacenter Energy Usage through Efficient Job Allocation type: conference user_id: '61579' year: '2011' ... --- _id: '5581' author: - first_name: Felix full_name: Wex, Felix last_name: Wex - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Dirk full_name: Neumann, Dirk last_name: Neumann citation: ama: 'Wex F, Schryen G, Neumann D. Intelligent Decision Support for Centralized Coordination during Emergency Response. In: Proceedings of the 8th International Conference on Information Systems for Crisis Response and Management (ISCRAM 2011). ; 2011.' apa: Wex, F., Schryen, G., & Neumann, D. (2011). Intelligent Decision Support for Centralized Coordination during Emergency Response. In Proceedings of the 8th International Conference on Information Systems for Crisis Response and Management (ISCRAM 2011). bibtex: '@inproceedings{Wex_Schryen_Neumann_2011, title={Intelligent Decision Support for Centralized Coordination during Emergency Response}, booktitle={Proceedings of the 8th International Conference on Information Systems for Crisis Response and Management (ISCRAM 2011)}, author={Wex, Felix and Schryen, Guido and Neumann, Dirk}, year={2011} }' chicago: Wex, Felix, Guido Schryen, and Dirk Neumann. “Intelligent Decision Support for Centralized Coordination during Emergency Response.” In Proceedings of the 8th International Conference on Information Systems for Crisis Response and Management (ISCRAM 2011), 2011. ieee: F. Wex, G. Schryen, and D. Neumann, “Intelligent Decision Support for Centralized Coordination during Emergency Response,” in Proceedings of the 8th International Conference on Information Systems for Crisis Response and Management (ISCRAM 2011), 2011. mla: Wex, Felix, et al. “Intelligent Decision Support for Centralized Coordination during Emergency Response.” Proceedings of the 8th International Conference on Information Systems for Crisis Response and Management (ISCRAM 2011), 2011. short: 'F. Wex, G. Schryen, D. Neumann, in: Proceedings of the 8th International Conference on Information Systems for Crisis Response and Management (ISCRAM 2011), 2011.' date_created: 2018-11-14T11:17:44Z date_updated: 2022-01-06T07:02:02Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:03:15Z date_updated: 2018-12-13T15:15:31Z file_id: '6180' file_name: 131.pdf file_size: 286447 relation: main_file file_date_updated: 2018-12-13T15:15:31Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: Proceedings of the 8th International Conference on Information Systems for Crisis Response and Management (ISCRAM 2011) status: public title: Intelligent Decision Support for Centralized Coordination during Emergency Response type: conference user_id: '61579' year: '2011' ... --- _id: '5619' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Melanie full_name: Volkamer, Melanie last_name: Volkamer - first_name: Sebastian full_name: Ries, Sebastian last_name: Ries citation: ama: 'Schryen G, Volkamer M, Ries S. A formal approach towards measuring trust in distributed systems. In: Proceedings of the 26th Annual ACM Symposium on Applied Computing. ; 2011.' apa: Schryen, G., Volkamer, M., & Ries, S. (2011). A formal approach towards measuring trust in distributed systems. In Proceedings of the 26th Annual ACM Symposium on Applied Computing. bibtex: '@inproceedings{Schryen_Volkamer_Ries_2011, title={A formal approach towards measuring trust in distributed systems}, booktitle={Proceedings of the 26th Annual ACM Symposium on Applied Computing}, author={Schryen, Guido and Volkamer, Melanie and Ries, Sebastian}, year={2011} }' chicago: Schryen, Guido, Melanie Volkamer, and Sebastian Ries. “A Formal Approach towards Measuring Trust in Distributed Systems.” In Proceedings of the 26th Annual ACM Symposium on Applied Computing, 2011. ieee: G. Schryen, M. Volkamer, and S. Ries, “A formal approach towards measuring trust in distributed systems,” in Proceedings of the 26th Annual ACM Symposium on Applied Computing, 2011. mla: Schryen, Guido, et al. “A Formal Approach towards Measuring Trust in Distributed Systems.” Proceedings of the 26th Annual ACM Symposium on Applied Computing, 2011. short: 'G. Schryen, M. Volkamer, S. Ries, in: Proceedings of the 26th Annual ACM Symposium on Applied Computing, 2011.' date_created: 2018-11-14T14:01:37Z date_updated: 2022-01-06T07:02:10Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:06:53Z date_updated: 2018-12-13T15:16:04Z file_id: '6183' file_name: p1739-schryen.pdf file_size: 453557 relation: main_file file_date_updated: 2018-12-13T15:16:04Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: Proceedings of the 26th Annual ACM Symposium on Applied Computing status: public title: A formal approach towards measuring trust in distributed systems type: conference user_id: '61579' year: '2011' ... --- _id: '5640' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: Schryen G. Is open source security a myth? What do vulnerability and patch data say? Communications of the ACM (CACM). 2011;Vol. 54(No. 5):130-139. apa: Schryen, G. (2011). Is open source security a myth? What do vulnerability and patch data say? Communications of the ACM (CACM), Vol. 54(No. 5), 130–139. bibtex: '@article{Schryen_2011, title={Is open source security a myth? What do vulnerability and patch data say?}, volume={Vol. 54}, number={No. 5}, journal={Communications of the ACM (CACM)}, publisher={Association for Computing Machinery}, author={Schryen, Guido}, year={2011}, pages={130–139} }' chicago: 'Schryen, Guido. “Is Open Source Security a Myth? What Do Vulnerability and Patch Data Say?” Communications of the ACM (CACM) Vol. 54, no. No. 5 (2011): 130–39.' ieee: G. Schryen, “Is open source security a myth? What do vulnerability and patch data say?,” Communications of the ACM (CACM), vol. Vol. 54, no. No. 5, pp. 130–139, 2011. mla: Schryen, Guido. “Is Open Source Security a Myth? What Do Vulnerability and Patch Data Say?” Communications of the ACM (CACM), vol. Vol. 54, no. No. 5, Association for Computing Machinery, 2011, pp. 130–39. short: G. Schryen, Communications of the ACM (CACM) Vol. 54 (2011) 130–139. date_created: 2018-11-14T14:34:54Z date_updated: 2022-01-06T07:02:17Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:03:56Z date_updated: 2018-12-13T15:15:42Z file_id: '6181' file_name: CACM article.pdf file_size: 1020040 relation: main_file file_date_updated: 2018-12-13T15:15:42Z has_accepted_license: '1' issue: No. 5 language: - iso: eng oa: '1' page: 130-139 publication: Communications of the ACM (CACM) publisher: Association for Computing Machinery status: public title: Is open source security a myth? What do vulnerability and patch data say? type: journal_article user_id: '61579' volume: Vol. 54 year: '2011' ... --- _id: '5641' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Seeking the VALUE in IS Business Value Research - An Agenda for investigating Synergies Between Socio-organizational Change, IS Capabilities Change, and IS Innovation. In: IS Capabilities Change, and IS Innovation, Proceedings of the 19th European Conference on Information Systems (ECIS 2011), Helsinki. ; 2011.' apa: Schryen, G. (2011). Seeking the VALUE in IS Business Value Research - An Agenda for investigating Synergies Between Socio-organizational Change, IS Capabilities Change, and IS Innovation. In IS Capabilities Change, and IS Innovation, Proceedings of the 19th European Conference on Information Systems (ECIS 2011), Helsinki. bibtex: '@inproceedings{Schryen_2011, title={Seeking the VALUE in IS Business Value Research - An Agenda for investigating Synergies Between Socio-organizational Change, IS Capabilities Change, and IS Innovation}, booktitle={IS Capabilities Change, and IS Innovation, Proceedings of the 19th European Conference on Information Systems (ECIS 2011), Helsinki}, author={Schryen, Guido}, year={2011} }' chicago: Schryen, Guido. “Seeking the VALUE in IS Business Value Research - An Agenda for Investigating Synergies Between Socio-Organizational Change, IS Capabilities Change, and IS Innovation.” In IS Capabilities Change, and IS Innovation, Proceedings of the 19th European Conference on Information Systems (ECIS 2011), Helsinki, 2011. ieee: G. Schryen, “Seeking the VALUE in IS Business Value Research - An Agenda for investigating Synergies Between Socio-organizational Change, IS Capabilities Change, and IS Innovation,” in IS Capabilities Change, and IS Innovation, Proceedings of the 19th European Conference on Information Systems (ECIS 2011), Helsinki, 2011. mla: Schryen, Guido. “Seeking the VALUE in IS Business Value Research - An Agenda for Investigating Synergies Between Socio-Organizational Change, IS Capabilities Change, and IS Innovation.” IS Capabilities Change, and IS Innovation, Proceedings of the 19th European Conference on Information Systems (ECIS 2011), Helsinki, 2011. short: 'G. Schryen, in: IS Capabilities Change, and IS Innovation, Proceedings of the 19th European Conference on Information Systems (ECIS 2011), Helsinki, 2011.' date_created: 2018-11-14T14:35:30Z date_updated: 2022-01-06T07:02:18Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:07:46Z date_updated: 2018-12-13T15:16:26Z file_id: '6184' file_name: REVISION - Seeking the value in IS value research.pdf file_size: 291468 relation: main_file file_date_updated: 2018-12-13T15:16:26Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: IS Capabilities Change, and IS Innovation, Proceedings of the 19th European Conference on Information Systems (ECIS 2011), Helsinki status: public title: Seeking the VALUE in IS Business Value Research - An Agenda for investigating Synergies Between Socio-organizational Change, IS Capabilities Change, and IS Innovation type: conference user_id: '61579' year: '2011' ... --- _id: '5685' abstract: - lang: eng text: In double-sided markets for computing resources an optimal allocation schedule among job offers and requests subject to relevant capacity constraints can be determined. With increasing storage demands and emerging storage services the question how to schedule storage jobs becomes more and more interesting. Since such scheduling problems are often in the class NP-complete an exact computation is not feasible in practice. On the other hand an approximation to the optimal solution can easily be found by means of using heuristics. The problem with this attempt is that the suggested solution may not be exactly optimal and is thus less satisfying. Considering the two above mentioned solution approaches one can clearly find a trade-off between the optimality of the solution and the efficiency to get to a solution at all. This work proposes to apply and combine heuristics in optimization to gain from both of their benefits while reducing the problematic aspects. Following this method it is assumed to get closer to the optimal solution in a shorter time compared to a full optimization. author: - first_name: Josef full_name: Finkbeiner, Josef last_name: Finkbeiner - first_name: Christian full_name: Bodenstein, Christian last_name: Bodenstein - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Dirk full_name: Neumann, Dirk last_name: Neumann citation: ama: 'Finkbeiner J, Bodenstein C, Schryen G, Neumann D. Applying heuristic methods for job scheduling in storage markets. In: 18th European Conference on Information Systems (ECIS 2010). ; 2010.' apa: Finkbeiner, J., Bodenstein, C., Schryen, G., & Neumann, D. (2010). Applying heuristic methods for job scheduling in storage markets. In 18th European Conference on Information Systems (ECIS 2010). bibtex: '@inproceedings{Finkbeiner_Bodenstein_Schryen_Neumann_2010, title={Applying heuristic methods for job scheduling in storage markets}, booktitle={18th European Conference on Information Systems (ECIS 2010)}, author={Finkbeiner, Josef and Bodenstein, Christian and Schryen, Guido and Neumann, Dirk}, year={2010} }' chicago: Finkbeiner, Josef, Christian Bodenstein, Guido Schryen, and Dirk Neumann. “Applying Heuristic Methods for Job Scheduling in Storage Markets.” In 18th European Conference on Information Systems (ECIS 2010), 2010. ieee: J. Finkbeiner, C. Bodenstein, G. Schryen, and D. Neumann, “Applying heuristic methods for job scheduling in storage markets,” in 18th European Conference on Information Systems (ECIS 2010), 2010. mla: Finkbeiner, Josef, et al. “Applying Heuristic Methods for Job Scheduling in Storage Markets.” 18th European Conference on Information Systems (ECIS 2010), 2010. short: 'J. Finkbeiner, C. Bodenstein, G. Schryen, D. Neumann, in: 18th European Conference on Information Systems (ECIS 2010), 2010.' date_created: 2018-11-14T15:45:11Z date_updated: 2022-01-06T07:02:32Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:21:06Z date_updated: 2018-12-13T15:19:40Z file_id: '6188' file_name: s1-ln7055316-1881058806-1939656818Hwf-1884822883IdV-5442784107055316PDF_HI0001.pdf file_size: 171336 relation: main_file file_date_updated: 2018-12-13T15:19:40Z has_accepted_license: '1' keyword: - Decision Support System - Algorithms - Optimization - Market Engineering language: - iso: eng oa: '1' publication: 18th European Conference on Information Systems (ECIS 2010) status: public title: Applying heuristic methods for job scheduling in storage markets type: conference user_id: '61579' year: '2010' ... --- _id: '5690' abstract: - lang: eng text: In a world, where more and more businesses seem to trade in an online market, the supply of online services to supply the ever-growing demand could quickly reach its capacity limits. Online service providers may find themselves maxed out at peak operation levels during high-traffic timeslots but too little demand during low-traffic timeslots, although the latter is becoming less frequent. At this point not only deciding which user is allocated what level of service becomes essential, but also the magnitude of the service provided, can be controlled by pricing. Pricing is an important factor when efficient and acceptable allocation of resources between individuals must be reached. Without prices, transferring or sharing goods would be impossible. In sharing information, pricing a product however is not as simple as relatively pricing an apple or a pear. Often the costs, and hence the prices are simply unknown. Backed by this scenario, the online services market could be combined with the market design mechanism of diamonds. For this we propose an ultimatum pricing strategy which effectively allows for valuations to be accounted for, but no longer a necessity when pricing in grid, cloud or other online computing environments. author: - first_name: Christian full_name: Bodenstein, Christian last_name: Bodenstein - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Dirk full_name: Neumann, Dirk last_name: Neumann citation: ama: 'Bodenstein C, Schryen G, Neumann D. From “Take-it-or-leave-it” offers to “Take-it-or-be-left-out” Ultimatum - A trade mechanism for Online Services. In: 18th European Conference on Information Systems (ECIS 2010). ; 2010.' apa: Bodenstein, C., Schryen, G., & Neumann, D. (2010). From “Take-it-or-leave-it” offers to “Take-it-or-be-left-out” Ultimatum - A trade mechanism for Online Services. In 18th European Conference on Information Systems (ECIS 2010). bibtex: '@inproceedings{Bodenstein_Schryen_Neumann_2010, title={From “Take-it-or-leave-it” offers to “Take-it-or-be-left-out” Ultimatum - A trade mechanism for Online Services}, booktitle={18th European Conference on Information Systems (ECIS 2010)}, author={Bodenstein, Christian and Schryen, Guido and Neumann, Dirk}, year={2010} }' chicago: Bodenstein, Christian, Guido Schryen, and Dirk Neumann. “From ‘Take-It-or-Leave-It’ Offers to ‘Take-It-or-Be-Left-out’ Ultimatum - A Trade Mechanism for Online Services.” In 18th European Conference on Information Systems (ECIS 2010), 2010. ieee: C. Bodenstein, G. Schryen, and D. Neumann, “From ‘Take-it-or-leave-it’ offers to ‘Take-it-or-be-left-out’ Ultimatum - A trade mechanism for Online Services,” in 18th European Conference on Information Systems (ECIS 2010), 2010. mla: Bodenstein, Christian, et al. “From ‘Take-It-or-Leave-It’ Offers to ‘Take-It-or-Be-Left-out’ Ultimatum - A Trade Mechanism for Online Services.” 18th European Conference on Information Systems (ECIS 2010), 2010. short: 'C. Bodenstein, G. Schryen, D. Neumann, in: 18th European Conference on Information Systems (ECIS 2010), 2010.' date_created: 2018-11-14T15:48:39Z date_updated: 2022-01-06T07:02:34Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:22:41Z date_updated: 2018-12-13T15:20:13Z file_id: '6191' file_name: Take it or leave it - ECIS - Proof.pdf file_size: 247621 relation: main_file file_date_updated: 2018-12-13T15:20:13Z has_accepted_license: '1' keyword: - Posted Price - Ultimatum Game - Energy Efficiency - Mechanism Design language: - iso: eng oa: '1' publication: 18th European Conference on Information Systems (ECIS 2010) status: public title: From "Take-it-or-leave-it" offers to "Take-it-or-be-left-out" Ultimatum - A trade mechanism for Online Services type: conference user_id: '61579' year: '2010' ... --- _id: '5598' abstract: - lang: eng text: Emerging digital environments and infrastructures, such as distributed services and computing services, have generated new options of communication, information sharing, and resource utilization in past years. Different distributed trust concepts are applied to increase trust in such systems. However, these concepts yield to rather complex architectures which make it difficult to determine which component or system needs to be trusted. This paper presents a novel trust measurement method for distributed systems which enables the t identification of weak points in the overall system architecture. The measurement method includes the specification of a formal trust language and its representation by means of propositional logic formulas. The applicability of the proposed concepts is demonstrated by conducting a case study on the Internet voting system that was used in the 2007 parliamentary elections in Estonia. author: - first_name: Melanie full_name: Volkamer, Melanie last_name: Volkamer - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Volkamer M, Schryen G. Measuring eTrust in distributed systems - General Concept and Application to Internet Voting. In: Proceedings of the 23rd Bled EConference. ; 2010.' apa: Volkamer, M., & Schryen, G. (2010). Measuring eTrust in distributed systems - General Concept and Application to Internet Voting. In Proceedings of the 23rd Bled eConference. bibtex: '@inproceedings{Volkamer_Schryen_2010, title={Measuring eTrust in distributed systems - General Concept and Application to Internet Voting}, booktitle={Proceedings of the 23rd Bled eConference}, author={Volkamer, Melanie and Schryen, Guido}, year={2010} }' chicago: Volkamer, Melanie, and Guido Schryen. “Measuring ETrust in Distributed Systems - General Concept and Application to Internet Voting.” In Proceedings of the 23rd Bled EConference, 2010. ieee: M. Volkamer and G. Schryen, “Measuring eTrust in distributed systems - General Concept and Application to Internet Voting,” in Proceedings of the 23rd Bled eConference, 2010. mla: Volkamer, Melanie, and Guido Schryen. “Measuring ETrust in Distributed Systems - General Concept and Application to Internet Voting.” Proceedings of the 23rd Bled EConference, 2010. short: 'M. Volkamer, G. Schryen, in: Proceedings of the 23rd Bled EConference, 2010.' date_created: 2018-11-14T11:49:50Z date_updated: 2022-01-06T07:02:06Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:14:05Z date_updated: 2018-12-13T15:16:50Z file_id: '6185' file_name: 06_Schryen.pdf file_size: 243413 relation: main_file file_date_updated: 2018-12-13T15:16:50Z has_accepted_license: '1' keyword: - distributed trust concepts - measuring etrust - Internet voting language: - iso: eng oa: '1' publication: Proceedings of the 23rd Bled eConference status: public title: Measuring eTrust in distributed systems - General Concept and Application to Internet Voting type: conference user_id: '61579' year: '2010' ... --- _id: '5631' abstract: - lang: eng text: While many theoretical arguments against or in favor of open source and closed source software development have been presented, the empirical basis for the assessment of arguments and the development of models is still weak. Addressing this research gap, this paper presents the first comprehensive empirical investigation of published vulnerabilities and patches of 17 widely deployed open source and closed source software packages, including operating systems, database systems, web browsers, email clients, and office systems. The empirical analysis uses comprehensive vulnerability data contained in the NIST National Vulnerability Database and a newly compiled data set of vulnerability patches. The results suggest that it is not the particular software development style that determines the severity of vulnerabilities and vendors? patching behavior, but rather the specific application type and the policy of the particular development community, respectively. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Rich full_name: Eliot, Rich last_name: Eliot citation: ama: 'Schryen G, Eliot R. Increasing software security through open source or closed source development? Empirics suggest that we have asked the wrong question. In: 43rd Annual Hawaii International Conference on System Sciences. ; 2010.' apa: Schryen, G., & Eliot, R. (2010). Increasing software security through open source or closed source development? Empirics suggest that we have asked the wrong question. In 43rd Annual Hawaii International Conference on System Sciences. bibtex: '@inproceedings{Schryen_Eliot_2010, title={Increasing software security through open source or closed source development? Empirics suggest that we have asked the wrong question}, booktitle={43rd Annual Hawaii International Conference on System Sciences}, author={Schryen, Guido and Eliot, Rich}, year={2010} }' chicago: Schryen, Guido, and Rich Eliot. “Increasing Software Security through Open Source or Closed Source Development? Empirics Suggest That We Have Asked the Wrong Question.” In 43rd Annual Hawaii International Conference on System Sciences, 2010. ieee: G. Schryen and R. Eliot, “Increasing software security through open source or closed source development? Empirics suggest that we have asked the wrong question,” in 43rd Annual Hawaii International Conference on System Sciences, 2010. mla: Schryen, Guido, and Rich Eliot. “Increasing Software Security through Open Source or Closed Source Development? Empirics Suggest That We Have Asked the Wrong Question.” 43rd Annual Hawaii International Conference on System Sciences, 2010. short: 'G. Schryen, R. Eliot, in: 43rd Annual Hawaii International Conference on System Sciences, 2010.' date_created: 2018-11-14T14:23:45Z date_updated: 2022-01-06T07:02:14Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:23:33Z date_updated: 2018-12-13T15:20:23Z file_id: '6192' file_name: vendors behavior - UPDATED IEEE version.pdf file_size: 299380 relation: main_file file_date_updated: 2018-12-13T15:20:23Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: 43rd Annual Hawaii International Conference on System Sciences status: public title: Increasing software security through open source or closed source development? Empirics suggest that we have asked the wrong question type: conference user_id: '61579' year: '2010' ... --- _id: '5632' abstract: - lang: eng text: 'Enduring doubts about the value of IS investments reveal that IS researchers have not fully managed to identify and to explain the economic benefits of IS. Three research tasks are essential requisites on the path towards addressing this criticism: the synthesis of knowledge, the identification of lack of knowledge, and the proposition of paths for closing knowledge gaps. This paper considers each of these tasks by a) synthesizing key research findings based on a comprehensive literature review, b) identifying and unfolding key limitations of current research, and c) applying a decision-theoretic perspective, which opens new horizons to IS business value research and shows paths for overcoming the limitations. The adoption of this perspective results in a decision-theoretic foundation of IS business value research and includes the proposition of a consistent terminology and a research model that frames further research.' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Christian full_name: Bodenstein, Christian last_name: Bodenstein citation: ama: 'Schryen G, Bodenstein C. A decision-theoretic foundation of IS business value research. In: Proceedings of the 18th European Conference on Information Systems (ECIS 2010). ; 2010.' apa: Schryen, G., & Bodenstein, C. (2010). A decision-theoretic foundation of IS business value research. In Proceedings of the 18th European Conference on Information Systems (ECIS 2010). bibtex: '@inproceedings{Schryen_Bodenstein_2010, title={A decision-theoretic foundation of IS business value research}, booktitle={Proceedings of the 18th European Conference on Information Systems (ECIS 2010)}, author={Schryen, Guido and Bodenstein, Christian}, year={2010} }' chicago: Schryen, Guido, and Christian Bodenstein. “A Decision-Theoretic Foundation of IS Business Value Research.” In Proceedings of the 18th European Conference on Information Systems (ECIS 2010), 2010. ieee: G. Schryen and C. Bodenstein, “A decision-theoretic foundation of IS business value research,” in Proceedings of the 18th European Conference on Information Systems (ECIS 2010), 2010. mla: Schryen, Guido, and Christian Bodenstein. “A Decision-Theoretic Foundation of IS Business Value Research.” Proceedings of the 18th European Conference on Information Systems (ECIS 2010), 2010. short: 'G. Schryen, C. Bodenstein, in: Proceedings of the 18th European Conference on Information Systems (ECIS 2010), 2010.' date_created: 2018-11-14T14:24:25Z date_updated: 2022-01-06T07:02:14Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:24:22Z date_updated: 2018-12-13T15:20:37Z file_id: '6193' file_name: IS business value - ECIS - Final Version.pdf file_size: 174368 relation: main_file file_date_updated: 2018-12-13T15:20:37Z has_accepted_license: '1' keyword: - Decision theory - IT value - IS assessment - IS evaluation language: - iso: eng oa: '1' publication: Proceedings of the 18th European Conference on Information Systems (ECIS 2010) status: public title: A decision-theoretic foundation of IS business value research type: conference user_id: '61579' year: '2010' ... --- _id: '5642' abstract: - lang: eng text: This paper presents a fuzzy set based decision support model for taking uncertainty into account when making security investment decisions for distributed systems. The proposed model is complementary to robabilistic approaches and useful in situations where probabilistic information is either unavailable or not appropriate to reliably predict future conditions. We ?rst present the speci?cation of a formal security language that allows to specify under which conditions a distributed system is protected against security violations. We show that each term of the security language can be transformed into an equivalent propositional logic term. Then we use propositional logic terms to de?ne a fuzzy set based decision model. This optimization model incorporates uncertainty with regard to the impact of investments on the achieved security levels of components of the distributed system. The model also accounts for budget and security constraints, in order to be applicable in practice. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. A Fuzzy Model for IT Security Investments. In: C. Freiling F, ed. Sicherheit 2010 : Sicherheit, Schutz Und Zuverl{\"a}ssigkeit ; Konferenzband Der 5. Jahrestagung Des Fachbereichs Sicherheit Der Gesellschaft F{\"u}r Informatik e.V. (GI), 5. - 7. Oktober 2010 in Berlin. Vol 170. GI-Edition: lecture notes in informatics. Proceedings. Bonn: Gesellschaft für Informatik; 2010:289-304.' apa: 'Schryen, G. (2010). A Fuzzy Model for IT Security Investments. In F. C. Freiling (Ed.), Sicherheit 2010 : Sicherheit, Schutz und Zuverl{\"a}ssigkeit ; Konferenzband der 5. Jahrestagung des Fachbereichs Sicherheit der Gesellschaft f{\"u}r Informatik e.V. (GI), 5. - 7. Oktober 2010 in Berlin (Vol. 170, pp. 289–304). Bonn: Gesellschaft für Informatik.' bibtex: '@inproceedings{Schryen_2010, place={Bonn}, series={GI-Edition: lecture notes in informatics. Proceedings}, title={A Fuzzy Model for IT Security Investments}, volume={170}, booktitle={Sicherheit 2010 : Sicherheit, Schutz und Zuverl{\"a}ssigkeit ; Konferenzband der 5. Jahrestagung des Fachbereichs Sicherheit der Gesellschaft f{\"u}r Informatik e.V. (GI), 5. - 7. Oktober 2010 in Berlin}, publisher={Gesellschaft für Informatik}, author={Schryen, Guido}, editor={C. Freiling, FelixEditor}, year={2010}, pages={289–304}, collection={GI-Edition: lecture notes in informatics. Proceedings} }' chicago: 'Schryen, Guido. “A Fuzzy Model for IT Security Investments.” In Sicherheit 2010 : Sicherheit, Schutz Und Zuverl{\"a}ssigkeit ; Konferenzband Der 5. Jahrestagung Des Fachbereichs Sicherheit Der Gesellschaft F{\"u}r Informatik e.V. (GI), 5. - 7. Oktober 2010 in Berlin, edited by Felix C. Freiling, 170:289–304. GI-Edition: Lecture Notes in Informatics. Proceedings. Bonn: Gesellschaft für Informatik, 2010.' ieee: 'G. Schryen, “A Fuzzy Model for IT Security Investments,” in Sicherheit 2010 : Sicherheit, Schutz und Zuverl{\"a}ssigkeit ; Konferenzband der 5. Jahrestagung des Fachbereichs Sicherheit der Gesellschaft f{\"u}r Informatik e.V. (GI), 5. - 7. Oktober 2010 in Berlin, 2010, vol. 170, pp. 289–304.' mla: 'Schryen, Guido. “A Fuzzy Model for IT Security Investments.” Sicherheit 2010 : Sicherheit, Schutz Und Zuverl{\"a}ssigkeit ; Konferenzband Der 5. Jahrestagung Des Fachbereichs Sicherheit Der Gesellschaft F{\"u}r Informatik e.V. (GI), 5. - 7. Oktober 2010 in Berlin, edited by Felix C. Freiling, vol. 170, Gesellschaft für Informatik, 2010, pp. 289–304.' short: 'G. Schryen, in: F. C. Freiling (Ed.), Sicherheit 2010 : Sicherheit, Schutz Und Zuverl{\"a}ssigkeit ; Konferenzband Der 5. Jahrestagung Des Fachbereichs Sicherheit Der Gesellschaft F{\"u}r Informatik e.V. (GI), 5. - 7. Oktober 2010 in Berlin, Gesellschaft für Informatik, Bonn, 2010, pp. 289–304.' date_created: 2018-11-14T14:35:59Z date_updated: 2022-01-06T07:02:18Z ddc: - '000' department: - _id: '277' editor: - first_name: Felix full_name: C. Freiling, Felix last_name: C. Freiling extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:22:12Z date_updated: 2018-12-13T15:20:03Z file_id: '6190' file_name: security_fuzzy_LNI Version.pdf file_size: 372660 relation: main_file file_date_updated: 2018-12-13T15:20:03Z has_accepted_license: '1' intvolume: ' 170' language: - iso: eng oa: '1' page: 289-304 place: Bonn publication: 'Sicherheit 2010 : Sicherheit, Schutz und Zuverl{\"a}ssigkeit ; Konferenzband der 5. Jahrestagung des Fachbereichs Sicherheit der Gesellschaft f{\"u}r Informatik e.V. (GI), 5. - 7. Oktober 2010 in Berlin' publisher: Gesellschaft für Informatik series_title: 'GI-Edition: lecture notes in informatics. Proceedings' status: public title: A Fuzzy Model for IT Security Investments type: conference user_id: '61579' volume: 170 year: '2010' ... --- _id: '5643' abstract: - lang: eng text: Enduring doubts about the value of IS investments reveal that IS researchers have not fully managed to identify and to explain the economic benefits of IS. This paper assumes that literature reviews, which represent a powerful instrument for the identification and synthesis of knowledge, have not tapped their full potential to address this issue due to deficiencies in methodology. The analysis of 18 literature reviews published in pertinent academic outlets during the past 20 years shows such deficiencies. Two of the most critical weaknesses identified are (1) the lack of theory use in most reviews and (2) a weak linkage of reviews, resulting in little progress in theory and framework development. The systematic identification of these weaknesses and the extraction of promising methodological examples from past literature are the main contributions of this work, which supports the composition of more effective literature reviews in future research. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. An Analysis of Literature Reviews on IS Business Value: How Deficiencies in Methodology and Theory Use Resulted in Limited Effectiveness. In: Proceedings of the First Scandinavian Conference on Information Systems (SCIS). ; 2010.' apa: 'Schryen, G. (2010). An Analysis of Literature Reviews on IS Business Value: How Deficiencies in Methodology and Theory Use Resulted in Limited Effectiveness. In Proceedings of the First Scandinavian Conference on Information Systems (SCIS).' bibtex: '@inproceedings{Schryen_2010, title={An Analysis of Literature Reviews on IS Business Value: How Deficiencies in Methodology and Theory Use Resulted in Limited Effectiveness}, booktitle={Proceedings of the First Scandinavian Conference on Information Systems (SCIS)}, author={Schryen, Guido}, year={2010} }' chicago: 'Schryen, Guido. “An Analysis of Literature Reviews on IS Business Value: How Deficiencies in Methodology and Theory Use Resulted in Limited Effectiveness.” In Proceedings of the First Scandinavian Conference on Information Systems (SCIS), 2010.' ieee: 'G. Schryen, “An Analysis of Literature Reviews on IS Business Value: How Deficiencies in Methodology and Theory Use Resulted in Limited Effectiveness,” in Proceedings of the First Scandinavian Conference on Information Systems (SCIS), 2010.' mla: 'Schryen, Guido. “An Analysis of Literature Reviews on IS Business Value: How Deficiencies in Methodology and Theory Use Resulted in Limited Effectiveness.” Proceedings of the First Scandinavian Conference on Information Systems (SCIS), 2010.' short: 'G. Schryen, in: Proceedings of the First Scandinavian Conference on Information Systems (SCIS), 2010.' date_created: 2018-11-14T14:36:26Z date_updated: 2022-01-06T07:02:18Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:14:51Z date_updated: 2018-12-13T15:17:00Z file_id: '6186' file_name: 2010_Book_ScandinavianInformationSystems - Schryen.pdf file_size: 302340 relation: main_file file_date_updated: 2018-12-13T15:17:00Z has_accepted_license: '1' keyword: - Literature review - Business value - Information systems - Methodology - Theory language: - iso: eng oa: '1' publication: Proceedings of the First Scandinavian Conference on Information Systems (SCIS) status: public title: 'An Analysis of Literature Reviews on IS Business Value: How Deficiencies in Methodology and Theory Use Resulted in Limited Effectiveness' type: conference user_id: '61579' year: '2010' ... --- _id: '5644' abstract: - lang: eng text: The economic relevance of information systems has been studied for many years and has attracted an abundance of research papers. However, the ?productivity paradoxon? of the 90s, Carr?s widely recognized paper ?IT doesn?t matter?, and several studies that do not find a positive correlation between IS investments and economic performance reveal long-lasting difficulties for IS researchers to explain ?IS business value?. Business executives and researchers also continue to question the value of IS investments. This raises the question of whether literature reviews have tapped their potential to address the concerns by covering key research areas of IS business value and preserving their key findings. In order to address this question, this paper identifies and describes 12 key research areas, and synthesizes what literature reviews published in pertinent academic outlets have done to preserve knowledge. The analysis of 22 literature reviews shows that some crucial areas have not been (sufficiently) covered. They provide fertile areas for future literature reviews. As this work is based on the results of more than 200 research papers, it is capable of drawing a comprehensive picture of the current state-of-the-art in IS business value research. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Preserving knowledge on IS business value: what literature reviews have done. Business \& Information Systems Engineering (BISE). 2010;52(4):225-237.' apa: 'Schryen, G. (2010). Preserving knowledge on IS business value: what literature reviews have done. Business \& Information Systems Engineering (BISE), 52(4), 225–237.' bibtex: '@article{Schryen_2010, title={Preserving knowledge on IS business value: what literature reviews have done}, volume={52}, number={4}, journal={Business \& Information Systems Engineering (BISE)}, publisher={Springer}, author={Schryen, Guido}, year={2010}, pages={225–237} }' chicago: 'Schryen, Guido. “Preserving Knowledge on IS Business Value: What Literature Reviews Have Done.” Business \& Information Systems Engineering (BISE) 52, no. 4 (2010): 225–37.' ieee: 'G. Schryen, “Preserving knowledge on IS business value: what literature reviews have done,” Business \& Information Systems Engineering (BISE), vol. 52, no. 4, pp. 225–237, 2010.' mla: 'Schryen, Guido. “Preserving Knowledge on IS Business Value: What Literature Reviews Have Done.” Business \& Information Systems Engineering (BISE), vol. 52, no. 4, Springer, 2010, pp. 225–37.' short: G. Schryen, Business \& Information Systems Engineering (BISE) 52 (2010) 225–237. date_created: 2018-11-14T14:38:02Z date_updated: 2022-01-06T07:02:19Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:19:37Z date_updated: 2018-12-13T15:17:12Z file_id: '6187' file_name: BISE-PreservingknowledgeonISbusinessvalue-Manuscript-1.pdf file_size: 525443 relation: main_file file_date_updated: 2018-12-13T15:17:12Z has_accepted_license: '1' intvolume: ' 52' issue: '4' keyword: - Business value - Information systems - Literature review - Meta review language: - iso: eng oa: '1' page: 225-237 publication: Business \& Information Systems Engineering (BISE) publisher: Springer status: public title: 'Preserving knowledge on IS business value: what literature reviews have done' type: journal_article user_id: '61579' volume: 52 year: '2010' ... --- _id: '5645' abstract: - lang: eng text: The economic relevance of information systems has been studied for many years and has attracted an abundance of research papers. However, the ?productivity paradoxon? of the 1990s, Carr?s widely recognized paper ?IT doesn?t matter?, and several studies that do not find a positive correlation between IS investments and economic performance reveal long-lasting difficulties for IS researchers to explain ?IS business value?. Business executives and researchers also continue to question the value of IS investments. This raises the question of whether literature reviews have tapped their potential to address the concerns by covering key research areas of IS business value and preserving their key findings. In order to address this question, this paper identifies and describes 12 key research areas, and synthesizes what literature reviews published in pertinent academic outlets have done to preserve knowledge. The analysis of 22 literature reviews shows that some crucial areas have not been (sufficiently) covered. They provide fertile areas for future literature reviews. As this work is based on the results of more than 200 research papers, it is capable of drawing a comprehensive picture of the current state-of-the-art in IS business value research. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: Schryen G. Ökonomischer Wert von Informationssystemen - Beitrag von Literatur-Reviews zum Wissenserhalt ( = Preserving Knowledge on IS Business Value. What Literature Reviews Have Done). Wirtschaftsinformatik. 2010;52(4):225-237. apa: Schryen, G. (2010). Ökonomischer Wert von Informationssystemen - Beitrag von Literatur-Reviews zum Wissenserhalt ( = Preserving Knowledge on IS Business Value. What Literature Reviews Have Done). Wirtschaftsinformatik, 52(4), 225–237. bibtex: '@article{Schryen_2010, title={Ökonomischer Wert von Informationssystemen - Beitrag von Literatur-Reviews zum Wissenserhalt ( = Preserving Knowledge on IS Business Value. What Literature Reviews Have Done)}, volume={52}, number={4}, journal={Wirtschaftsinformatik}, publisher={Gabler; Springer}, author={Schryen, Guido}, year={2010}, pages={225–237} }' chicago: 'Schryen, Guido. “Ökonomischer Wert von Informationssystemen - Beitrag von Literatur-Reviews Zum Wissenserhalt ( = Preserving Knowledge on IS Business Value. What Literature Reviews Have Done).” Wirtschaftsinformatik 52, no. 4 (2010): 225–37.' ieee: G. Schryen, “Ökonomischer Wert von Informationssystemen - Beitrag von Literatur-Reviews zum Wissenserhalt ( = Preserving Knowledge on IS Business Value. What Literature Reviews Have Done),” Wirtschaftsinformatik, vol. 52, no. 4, pp. 225–237, 2010. mla: Schryen, Guido. “Ökonomischer Wert von Informationssystemen - Beitrag von Literatur-Reviews Zum Wissenserhalt ( = Preserving Knowledge on IS Business Value. What Literature Reviews Have Done).” Wirtschaftsinformatik, vol. 52, no. 4, Gabler; Springer, 2010, pp. 225–37. short: G. Schryen, Wirtschaftsinformatik 52 (2010) 225–237. date_created: 2018-11-14T14:38:45Z date_updated: 2022-01-06T07:02:19Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-11T15:21:36Z date_updated: 2018-12-13T15:19:50Z file_id: '6189' file_name: Schryen2010_Article_ÖkonomischerWertVonInformation.pdf file_size: 850718 relation: main_file file_date_updated: 2018-12-13T15:19:50Z has_accepted_license: '1' intvolume: ' 52' issue: '4' language: - iso: eng oa: '1' page: 225-237 publication: Wirtschaftsinformatik publisher: Gabler; Springer status: public title: Ökonomischer Wert von Informationssystemen - Beitrag von Literatur-Reviews zum Wissenserhalt ( = Preserving Knowledge on IS Business Value. What Literature Reviews Have Done) type: journal_article user_id: '61579' volume: 52 year: '2010' ... --- _id: '5597' abstract: - lang: eng text: Der Beitrag diskutiert die kontroversen Ans{\"a}tze ? Verifizierung versus Evaluation/Zertifizierung ? zur Sicherung elektronischer Wahlen mit Wahlger{\"a}ten. Dabei spielt das Urteils des Bundesverfassungsgerichts [BVG099] eine zentrale Rolle. Hierin wird entschieden, dass die Zertifizierung des Wahlger{\"a}tes nicht ausreicht und es werden Verifizierungsfunktionen gefordert, die den W{\"a}hlern die M{\"o}glichkeit geben sich von der Integrit{\"a}t des Wahlergebnisses zu {\"u}berzeugen. Der Beitrag zeigt auf, dass auch mit der Implementierung entsprechender Verifizierungsfunktionen nicht auf Zertifizierung verzichtet werden kann, da an ein Wahlger{\"a}t auch andere Anforderungen wie etwa hinsichtlich des Wahlgeheimnisses gestellt werden. Es wird au{\ss}erdem die Frage diskutiert, warum der Zertifizierung hinsichtlich dieser zus{\"a}tzlichen Anforderungen vertraut werden kann, w{\"a}hrend dies nicht der Fall bei der Integrit{\"a}tsanforderung ist. author: - first_name: Melanie full_name: Volkamer, Melanie last_name: Volkamer - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Lucie full_name: Langer, Lucie last_name: Langer - first_name: Axel full_name: Schmidt, Axel last_name: Schmidt - first_name: Johannes full_name: Buchmann, Johannes last_name: Buchmann citation: ama: 'Volkamer M, Schryen G, Langer L, Schmidt A, Buchmann J. Elektronische Wahlen: Verifizierung vs. Zertifizierung. In: Workshop Elektronische Wahlen, Elektronische Teilhabe, Societyware, 39th GI-Jahrestagung. ; 2009.' apa: 'Volkamer, M., Schryen, G., Langer, L., Schmidt, A., & Buchmann, J. (2009). Elektronische Wahlen: Verifizierung vs. Zertifizierung. In Workshop Elektronische Wahlen, elektronische Teilhabe, Societyware, 39th GI-Jahrestagung.' bibtex: '@inproceedings{Volkamer_Schryen_Langer_Schmidt_Buchmann_2009, title={Elektronische Wahlen: Verifizierung vs. Zertifizierung}, booktitle={Workshop Elektronische Wahlen, elektronische Teilhabe, Societyware, 39th GI-Jahrestagung}, author={Volkamer, Melanie and Schryen, Guido and Langer, Lucie and Schmidt, Axel and Buchmann, Johannes}, year={2009} }' chicago: 'Volkamer, Melanie, Guido Schryen, Lucie Langer, Axel Schmidt, and Johannes Buchmann. “Elektronische Wahlen: Verifizierung vs. Zertifizierung.” In Workshop Elektronische Wahlen, Elektronische Teilhabe, Societyware, 39th GI-Jahrestagung, 2009.' ieee: 'M. Volkamer, G. Schryen, L. Langer, A. Schmidt, and J. Buchmann, “Elektronische Wahlen: Verifizierung vs. Zertifizierung,” in Workshop Elektronische Wahlen, elektronische Teilhabe, Societyware, 39th GI-Jahrestagung, 2009.' mla: 'Volkamer, Melanie, et al. “Elektronische Wahlen: Verifizierung vs. Zertifizierung.” Workshop Elektronische Wahlen, Elektronische Teilhabe, Societyware, 39th GI-Jahrestagung, 2009.' short: 'M. Volkamer, G. Schryen, L. Langer, A. Schmidt, J. Buchmann, in: Workshop Elektronische Wahlen, Elektronische Teilhabe, Societyware, 39th GI-Jahrestagung, 2009.' date_created: 2018-11-14T11:49:04Z date_updated: 2022-01-06T07:02:05Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:15:26Z date_updated: 2018-12-18T13:15:26Z file_id: '6313' file_name: Elektronische Wahlen - GI 2009.pdf file_size: 60870 relation: main_file file_date_updated: 2018-12-18T13:15:26Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: Workshop Elektronische Wahlen, elektronische Teilhabe, Societyware, 39th GI-Jahrestagung status: public title: 'Elektronische Wahlen: Verifizierung vs. Zertifizierung' type: conference user_id: '61579' year: '2009' ... --- _id: '5621' abstract: - lang: eng text: Remote voting through the Internet provides convenience and access to the electorate. At the same time, the security concerns facing any distributed application are magnified when the task is so crucial to democratic society. In addition, some of the electoral process loses transparency when it is encapsulated in information technology. In this paper, we examine the public record of three recent elections that used Internet voting. Our specific goal is to identify any potential flaws that security experts would recognize, but may have not been identified in the rush to implement technology. To do this, we present a multiple exploratory case study, looking at elections conducted between 2006 and 2007 in Estonia, Netherlands, and Switzerland. These elections were selected as particularly interesting and accessible, and each presents its own technical and security challenges. The electoral environment, technical design and process for each election are described, including reconstruction of details which are implied but not specified within the source material. We found that all three elections warrant significant concern about voter security, verifiability, and transparency. Usability, our fourth area of focus, seems to have been well-addressed in these elections. While our analysis is based on public documents and previously published reports, and therefore lacking access to any confidential materials held by electoral officials, this comparative analysis provides interesting insight and consistent questions across all these cases. Effective review of Internet voting requires an aggressive stance towards identifying potential security and operational flaws, and we encourage the use of third party reviews with critical technology skills during design, programming, and voting to reduce the changes of failure or fraud that would undermine public confidence. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Eliot full_name: Rich, Eliot last_name: Rich citation: ama: 'Schryen G, Rich E. Security in Large-Scale Internet Elections: A Retrospective Analysis of Elections in Estonia, The Netherlands, and Switzerland. IEEE Transactions on Information Forensics \& Security. 2009;4(4 Part):729-744.' apa: 'Schryen, G., & Rich, E. (2009). Security in Large-Scale Internet Elections: A Retrospective Analysis of Elections in Estonia, The Netherlands, and Switzerland. IEEE Transactions on Information Forensics \& Security, 4(4 Part), 729–744.' bibtex: '@article{Schryen_Rich_2009, title={Security in Large-Scale Internet Elections: A Retrospective Analysis of Elections in Estonia, The Netherlands, and Switzerland}, volume={4}, number={4 Part}, journal={IEEE Transactions on Information Forensics \& Security}, publisher={IEEE}, author={Schryen, Guido and Rich, Eliot}, year={2009}, pages={729–744} }' chicago: 'Schryen, Guido, and Eliot Rich. “Security in Large-Scale Internet Elections: A Retrospective Analysis of Elections in Estonia, The Netherlands, and Switzerland.” IEEE Transactions on Information Forensics \& Security 4, no. 4 Part (2009): 729–44.' ieee: 'G. Schryen and E. Rich, “Security in Large-Scale Internet Elections: A Retrospective Analysis of Elections in Estonia, The Netherlands, and Switzerland,” IEEE Transactions on Information Forensics \& Security, vol. 4, no. 4 Part, pp. 729–744, 2009.' mla: 'Schryen, Guido, and Eliot Rich. “Security in Large-Scale Internet Elections: A Retrospective Analysis of Elections in Estonia, The Netherlands, and Switzerland.” IEEE Transactions on Information Forensics \& Security, vol. 4, no. 4 Part, IEEE, 2009, pp. 729–44.' short: G. Schryen, E. Rich, IEEE Transactions on Information Forensics \& Security 4 (2009) 729–744. date_created: 2018-11-14T14:06:44Z date_updated: 2022-01-06T07:02:12Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:16:07Z date_updated: 2018-12-18T13:16:07Z file_id: '6316' file_name: JOURNAL VERSION.pdf file_size: 1544790 relation: main_file file_date_updated: 2018-12-18T13:16:07Z has_accepted_license: '1' intvolume: ' 4' issue: 4 Part keyword: - e-voting - Internet voting - Internet election - security - verifiability - RIES - Estonia - Neuch{\^a}tel language: - iso: eng oa: '1' page: 729-744 publication: IEEE Transactions on Information Forensics \& Security publisher: IEEE status: public title: 'Security in Large-Scale Internet Elections: A Retrospective Analysis of Elections in Estonia, The Netherlands, and Switzerland' type: journal_article user_id: '61579' volume: 4 year: '2009' ... --- _id: '5625' abstract: - lang: eng text: The increasing availability and deployment of open source software in personal and commercial environments makes open source software highly appealing for hackers, and others who are interested in exploiting software vulnerabilities. This deployment has resulted in a debate ?full of religion? on the security of open source software compared to that of closed source software. However, beyond such arguments, only little quantitative analysis on this research issue has taken place. We discuss the state-of-the-art of the security debate and identify shortcomings. Based on these, we propose new metrics, which allows to answer the question to what extent the review process of open source and closed source development has helped to fix vulnerabilities. We illustrate the application of some of these metrics in a case study on OpenOffice (open source software) vs. Microsoft Office (closed source software). author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen - first_name: Rouven full_name: Kadura, Rouven last_name: Kadura citation: ama: 'Schryen G, Kadura R. Open Source vs. Closed Source Software: Towards Measuring Security. In: 24th Annual ACM Symposium on Applied Computing. ; 2009.' apa: 'Schryen, G., & Kadura, R. (2009). Open Source vs. Closed Source Software: Towards Measuring Security. In 24th Annual ACM Symposium on Applied Computing.' bibtex: '@inproceedings{Schryen_Kadura_2009, title={Open Source vs. Closed Source Software: Towards Measuring Security}, booktitle={24th Annual ACM Symposium on Applied Computing}, author={Schryen, Guido and Kadura, Rouven}, year={2009} }' chicago: 'Schryen, Guido, and Rouven Kadura. “Open Source vs. Closed Source Software: Towards Measuring Security.” In 24th Annual ACM Symposium on Applied Computing, 2009.' ieee: 'G. Schryen and R. Kadura, “Open Source vs. Closed Source Software: Towards Measuring Security,” in 24th Annual ACM Symposium on Applied Computing, 2009.' mla: 'Schryen, Guido, and Rouven Kadura. “Open Source vs. Closed Source Software: Towards Measuring Security.” 24th Annual ACM Symposium on Applied Computing, 2009.' short: 'G. Schryen, R. Kadura, in: 24th Annual ACM Symposium on Applied Computing, 2009.' date_created: 2018-11-14T14:12:27Z date_updated: 2022-01-06T07:02:13Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:14:09Z date_updated: 2018-12-18T13:14:09Z file_id: '6310' file_name: ACM VERSION.pdf file_size: 456497 relation: main_file file_date_updated: 2018-12-18T13:14:09Z has_accepted_license: '1' keyword: - Open source software - Closed source software - Security - Metrics language: - iso: eng oa: '1' publication: 24th Annual ACM Symposium on Applied Computing status: public title: 'Open Source vs. Closed Source Software: Towards Measuring Security' type: conference user_id: '61579' year: '2009' ... --- _id: '5646' abstract: - lang: eng text: While many theoretical arguments against or in favor of open source and closed source software development have been presented, the empirical basis for the assessment of arguments is still weak. Addressing this research gap, this paper presents a comprehensive empirical investigation of the patching behavior of software vendors/communities of widely deployed open source and closed source software packages, including operating systems, database systems, web browsers, email clients, and office systems. As the value of any empirical study relies on the quality of data available, this paper also discusses in detail data issues, explains to what extent the empirical analysis can be based on vulnerability data contained in the NIST National Vulnerability Database, and shows how data on vulnerability patches was collected by the author to support this study. The results of the analysis suggest that it is not the particular software development style that determines patching behavior, but rather the policy of the particular software vendor. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. A comprehensive and comparative analysis of the patching behavior of open source and closed source software vendors. In: 5th International Conference on IT Security Incident Management \& IT Forensics. ; 2009.' apa: Schryen, G. (2009). A comprehensive and comparative analysis of the patching behavior of open source and closed source software vendors. In 5th International Conference on IT Security Incident Management \& IT Forensics. bibtex: '@inproceedings{Schryen_2009, title={A comprehensive and comparative analysis of the patching behavior of open source and closed source software vendors}, booktitle={5th International Conference on IT Security Incident Management \& IT Forensics}, author={Schryen, Guido}, year={2009} }' chicago: Schryen, Guido. “A Comprehensive and Comparative Analysis of the Patching Behavior of Open Source and Closed Source Software Vendors.” In 5th International Conference on IT Security Incident Management \& IT Forensics, 2009. ieee: G. Schryen, “A comprehensive and comparative analysis of the patching behavior of open source and closed source software vendors,” in 5th International Conference on IT Security Incident Management \& IT Forensics, 2009. mla: Schryen, Guido. “A Comprehensive and Comparative Analysis of the Patching Behavior of Open Source and Closed Source Software Vendors.” 5th International Conference on IT Security Incident Management \& IT Forensics, 2009. short: 'G. Schryen, in: 5th International Conference on IT Security Incident Management \& IT Forensics, 2009.' date_created: 2018-11-14T14:40:04Z date_updated: 2022-01-06T07:02:19Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:14:48Z date_updated: 2018-12-18T13:14:48Z file_id: '6311' file_name: Conference Version.pdf file_size: 594302 relation: main_file file_date_updated: 2018-12-18T13:14:48Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: 5th International Conference on IT Security Incident Management \& IT Forensics status: public title: A comprehensive and comparative analysis of the patching behavior of open source and closed source software vendors type: conference user_id: '61579' year: '2009' ... --- _id: '5647' abstract: - lang: eng text: Reviewing literature on open source and closed source security reveals that the discussion is often determined by biased attitudes toward one of these development styles. The discussion specifically lacks appropriate metrics, methodology and hard data. This paper contributes to solving this problem by analyzing and comparing published vulnerabilities of eight open source software and nine closed source software packages, all of which are widely deployed. Thereby, it provides an extensive empirical analysis of vulnerabilities in terms of mean time between vulnerability disclosures, the development of disclosure over time, and the severity of vulnerabilities, and allows for validating models provided in the literature. The investigation reveals that (a) the mean time between vulnerability disclosures was lower for open source software in half of the cases, while the other cases show no differences, (b) in contrast to literature assumption, 14 out of 17 software packages showed a significant linear or piecewise linear correlation between time and the number of published vulnerabilities, and (c) regarding the severity of vulnerabilities, no significant differences were found between open source and closed source. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Security of open source and closed source software: An empirical comparison of published vulnerabilities. In: 15th Americas Conference on Information Systems. ; 2009.' apa: 'Schryen, G. (2009). Security of open source and closed source software: An empirical comparison of published vulnerabilities. In 15th Americas Conference on Information Systems.' bibtex: '@inproceedings{Schryen_2009, title={Security of open source and closed source software: An empirical comparison of published vulnerabilities}, booktitle={15th Americas Conference on Information Systems}, author={Schryen, Guido}, year={2009} }' chicago: 'Schryen, Guido. “Security of Open Source and Closed Source Software: An Empirical Comparison of Published Vulnerabilities.” In 15th Americas Conference on Information Systems, 2009.' ieee: 'G. Schryen, “Security of open source and closed source software: An empirical comparison of published vulnerabilities,” in 15th Americas Conference on Information Systems, 2009.' mla: 'Schryen, Guido. “Security of Open Source and Closed Source Software: An Empirical Comparison of Published Vulnerabilities.” 15th Americas Conference on Information Systems, 2009.' short: 'G. Schryen, in: 15th Americas Conference on Information Systems, 2009.' date_created: 2018-11-14T14:41:24Z date_updated: 2022-01-06T07:02:19Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:16:39Z date_updated: 2018-12-18T13:16:39Z file_id: '6317' file_name: Security of Open Source and Closed Source Software An Empirical - AMCIS Version.pdf file_size: 483690 relation: main_file file_date_updated: 2018-12-18T13:16:39Z has_accepted_license: '1' keyword: - Vulnerabilities - security - open source software - closed source software - empirical comparison language: - iso: eng oa: '1' publication: 15th Americas Conference on Information Systems status: public title: 'Security of open source and closed source software: An empirical comparison of published vulnerabilities' type: conference user_id: '61579' year: '2009' ... --- _id: '5648' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: Schryen G. Effektivität und Effizienz von Anti-Spam-Maßnahmen. Linux Technical Review. 2008;(7). apa: Schryen, G. (2008). Effektivität und Effizienz von Anti-Spam-Maßnahmen. Linux Technical Review, (7). bibtex: '@article{Schryen_2008, title={Effektivität und Effizienz von Anti-Spam-Maßnahmen}, number={7}, journal={Linux Technical Review}, publisher={Linux New Media AG}, author={Schryen, Guido}, year={2008} }' chicago: Schryen, Guido. “Effektivität Und Effizienz von Anti-Spam-Maßnahmen.” Linux Technical Review, no. 7 (2008). ieee: G. Schryen, “Effektivität und Effizienz von Anti-Spam-Maßnahmen,” Linux Technical Review, no. 7, 2008. mla: Schryen, Guido. “Effektivität Und Effizienz von Anti-Spam-Maßnahmen.” Linux Technical Review, no. 7, Linux New Media AG, 2008. short: G. Schryen, Linux Technical Review (2008). date_created: 2018-11-14T14:41:58Z date_updated: 2022-01-06T07:02:20Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:17:40Z date_updated: 2018-12-18T13:17:40Z file_id: '6319' file_name: Linux Technical Review 2008 - Spam.pdf file_size: 41784 relation: main_file file_date_updated: 2018-12-18T13:17:40Z has_accepted_license: '1' issue: '7' language: - iso: eng oa: '1' publication: Linux Technical Review publisher: Linux New Media AG status: public title: Effektivität und Effizienz von Anti-Spam-Maßnahmen type: journal_article user_id: '61579' year: '2008' ... --- _id: '5649' abstract: - lang: eng text: The Estonian parliamentary election in 2007 is regarded as a success story of large-scale Internet elections. I use this election in a single case study on practical security to show that low quality of security and its management does not necessarily prevent large-scale Internet elections from being conducted. I also provide research propositions with regard to future challenges for large-scale Internet elections. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Practical Security of Large-scale Elections: An Exploratory Case Study of Internet Voting in Estonia. In: 7th Workshop on E-Business (WEB 2008, AIS Special Interest Group on E-Business). ; 2008.' apa: 'Schryen, G. (2008). Practical Security of Large-scale Elections: An Exploratory Case Study of Internet Voting in Estonia. In 7th Workshop on e-Business (WEB 2008, AIS Special Interest Group on E-Business).' bibtex: '@inproceedings{Schryen_2008, title={Practical Security of Large-scale Elections: An Exploratory Case Study of Internet Voting in Estonia}, booktitle={7th Workshop on e-Business (WEB 2008, AIS Special Interest Group on E-Business)}, author={Schryen, Guido}, year={2008} }' chicago: 'Schryen, Guido. “Practical Security of Large-Scale Elections: An Exploratory Case Study of Internet Voting in Estonia.” In 7th Workshop on E-Business (WEB 2008, AIS Special Interest Group on E-Business), 2008.' ieee: 'G. Schryen, “Practical Security of Large-scale Elections: An Exploratory Case Study of Internet Voting in Estonia,” in 7th Workshop on e-Business (WEB 2008, AIS Special Interest Group on E-Business), 2008.' mla: 'Schryen, Guido. “Practical Security of Large-Scale Elections: An Exploratory Case Study of Internet Voting in Estonia.” 7th Workshop on E-Business (WEB 2008, AIS Special Interest Group on E-Business), 2008.' short: 'G. Schryen, in: 7th Workshop on E-Business (WEB 2008, AIS Special Interest Group on E-Business), 2008.' date_created: 2018-11-14T14:43:23Z date_updated: 2022-01-06T07:02:20Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:18:21Z date_updated: 2018-12-18T13:18:21Z file_id: '6320' file_name: Schryen - Practical Security of Large-scale Elections - LNBIP - web version.pdf file_size: 273231 relation: main_file file_date_updated: 2018-12-18T13:18:21Z has_accepted_license: '1' keyword: - Internet voting - large-scale election - Estonian parliamen- tary election - security - security management language: - iso: eng oa: '1' publication: 7th Workshop on e-Business (WEB 2008, AIS Special Interest Group on E-Business) status: public title: 'Practical Security of Large-scale Elections: An Exploratory Case Study of Internet Voting in Estonia' type: conference user_id: '61579' year: '2008' ... --- _id: '6287' abstract: - lang: eng text: Spamming remains a form of Internet abuse, which burdens the Internet infrastructure, is generally regarded as an annoyance, and is said to cause a huge economic harm. Many technological, organizational, and legislative anti-spam measures have already been proposed and implemented, but have not led to any substantial decrease in the number of spam e-mails. We propose a scalable and flexible infrastructure framework that integrates several anti-spam measures and that features both a technological and an organizational facet. The key element of our infrastructure is a new organizational unit that reliably and transparently limits the number of e-mails that can be sent per day and per account. We also analyze the proposed framework in terms of its theoretical effectiveness, the required resources, and its limitations. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Preventing E-Mail Spam: The Conceptualization and the Analysis of an Infrastructure Framework.; 2007.' apa: 'Schryen, G. (2007). Preventing E-mail Spam: The Conceptualization and the Analysis of an Infrastructure Framework.' bibtex: '@book{Schryen_2007, title={Preventing E-mail Spam: The Conceptualization and the Analysis of an Infrastructure Framework}, author={Schryen, Guido}, year={2007} }' chicago: 'Schryen, Guido. Preventing E-Mail Spam: The Conceptualization and the Analysis of an Infrastructure Framework, 2007.' ieee: 'G. Schryen, Preventing E-mail Spam: The Conceptualization and the Analysis of an Infrastructure Framework. 2007.' mla: 'Schryen, Guido. Preventing E-Mail Spam: The Conceptualization and the Analysis of an Infrastructure Framework. 2007.' short: 'G. Schryen, Preventing E-Mail Spam: The Conceptualization and the Analysis of an Infrastructure Framework, 2007.' date_created: 2018-12-18T12:50:22Z date_updated: 2022-01-06T07:03:00Z ddc: - '000' department: - _id: '277' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:23:40Z date_updated: 2018-12-18T13:23:40Z file_id: '6322' file_name: anti_spam_framework.pdf file_size: 456755 relation: main_file file_date_updated: 2018-12-18T13:23:40Z has_accepted_license: '1' keyword: - Email - Infrastructure - Internet - Spam language: - iso: eng oa: '1' status: public title: 'Preventing E-mail Spam: The Conceptualization and the Analysis of an Infrastructure Framework' type: report user_id: '61579' year: '2007' ... --- _id: '5650' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. A Scalable and Flexible Infrastructure Framework For Addressing Spam. In: Satesh D, Prabhakar R, eds. Proceedings of IPSI International Conference on Advances in the Internet, Processing, Systems, and Interdisciplinary Research. Hyderabad, India: ICFAI University Press; 2007:55-64.' apa: 'Schryen, G. (2007). A Scalable and Flexible Infrastructure Framework For Addressing Spam. In D. Satesh & R. Prabhakar (Eds.), Proceedings of IPSI International Conference on Advances in the Internet, Processing, Systems, and Interdisciplinary Research (pp. 55–64). Hyderabad, India: ICFAI University Press.' bibtex: '@inbook{Schryen_2007, place={Hyderabad, India}, title={A Scalable and Flexible Infrastructure Framework For Addressing Spam}, booktitle={Proceedings of IPSI International Conference on Advances in the Internet, Processing, Systems, and Interdisciplinary Research}, publisher={ICFAI University Press}, author={Schryen, Guido}, editor={Satesh, D. and Prabhakar, R.Editors}, year={2007}, pages={55–64} }' chicago: 'Schryen, Guido. “A Scalable and Flexible Infrastructure Framework For Addressing Spam.” In Proceedings of IPSI International Conference on Advances in the Internet, Processing, Systems, and Interdisciplinary Research, edited by D. Satesh and R. Prabhakar, 55–64. Hyderabad, India: ICFAI University Press, 2007.' ieee: 'G. Schryen, “A Scalable and Flexible Infrastructure Framework For Addressing Spam,” in Proceedings of IPSI International Conference on Advances in the Internet, Processing, Systems, and Interdisciplinary Research, D. Satesh and R. Prabhakar, Eds. Hyderabad, India: ICFAI University Press, 2007, pp. 55–64.' mla: Schryen, Guido. “A Scalable and Flexible Infrastructure Framework For Addressing Spam.” Proceedings of IPSI International Conference on Advances in the Internet, Processing, Systems, and Interdisciplinary Research, edited by D. Satesh and R. Prabhakar, ICFAI University Press, 2007, pp. 55–64. short: 'G. Schryen, in: D. Satesh, R. Prabhakar (Eds.), Proceedings of IPSI International Conference on Advances in the Internet, Processing, Systems, and Interdisciplinary Research, ICFAI University Press, Hyderabad, India, 2007, pp. 55–64.' date_created: 2018-11-14T14:44:01Z date_updated: 2022-01-06T07:02:20Z department: - _id: '277' editor: - first_name: D. full_name: Satesh, D. last_name: Satesh - first_name: R. full_name: Prabhakar, R. last_name: Prabhakar extern: '1' language: - iso: eng page: 55-64 place: Hyderabad, India publication: Proceedings of IPSI International Conference on Advances in the Internet, Processing, Systems, and Interdisciplinary Research publisher: ICFAI University Press status: public title: A Scalable and Flexible Infrastructure Framework For Addressing Spam type: book_chapter user_id: '61579' year: '2007' ... --- _id: '5651' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Anti-Spam Measures: Analysis and Design. Berlin, Heidelberg, New York: Springer; 2007.' apa: 'Schryen, G. (2007). Anti-Spam Measures: Analysis and Design. Berlin, Heidelberg, New York: Springer.' bibtex: '@book{Schryen_2007, place={Berlin, Heidelberg, New York}, title={Anti-Spam Measures: Analysis and Design}, publisher={Springer}, author={Schryen, Guido}, year={2007} }' chicago: 'Schryen, Guido. Anti-Spam Measures: Analysis and Design. Berlin, Heidelberg, New York: Springer, 2007.' ieee: 'G. Schryen, Anti-Spam Measures: Analysis and Design. Berlin, Heidelberg, New York: Springer, 2007.' mla: 'Schryen, Guido. Anti-Spam Measures: Analysis and Design. Springer, 2007.' short: 'G. Schryen, Anti-Spam Measures: Analysis and Design, Springer, Berlin, Heidelberg, New York, 2007.' date_created: 2018-11-14T14:45:12Z date_updated: 2022-01-06T07:02:20Z department: - _id: '277' extern: '1' language: - iso: eng place: Berlin, Heidelberg, New York publisher: Springer status: public title: 'Anti-Spam Measures: Analysis and Design' type: book user_id: '61579' year: '2007' ... --- _id: '5652' abstract: - lang: eng text: More than half of world-wide e-mail traffic ? an estimated total of several billion e-mails per day ? consists of spam. This is becoming a considerable disturbance to telecommunications. Spam is also closely related to other kinds of cyber crime as it possibly contains malicious software or is pursuing some kind of fraudulent aim, such as phishing. Besides technical and organizational measures, many countries have introduced anti-spam legislation. However, today's world-wide legislative coverage of spam is heterogeneous, and its effectiveness is controversially discussed. This article describes important parameters by which anti-spam legislation can vary and gives an overview and analysis of world-wide anti-spam legislation, including the European Directive 2002/58/EC, the U.S. CANSPAM Act of 2003, and international cooperation, such as the London Action Plan. The article then proceeds to discuss the effectiveness of current laws, and it identifies problems resulting from the fact that an international phenomenon is being addressed by national legislation. Finally, the article presents suggestions for overcoming some of these problems. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Anti-spam legislation: An analysis of laws and their effectiveness. Information and Communications Technology Law. 2007;16(1):17-32.' apa: 'Schryen, G. (2007). Anti-spam legislation: An analysis of laws and their effectiveness. Information and Communications Technology Law, 16(1), 17–32.' bibtex: '@article{Schryen_2007, title={Anti-spam legislation: An analysis of laws and their effectiveness}, volume={16}, number={1}, journal={Information and Communications Technology Law}, publisher={Taylor \& Francis}, author={Schryen, Guido}, year={2007}, pages={17–32} }' chicago: 'Schryen, Guido. “Anti-Spam Legislation: An Analysis of Laws and Their Effectiveness.” Information and Communications Technology Law 16, no. 1 (2007): 17–32.' ieee: 'G. Schryen, “Anti-spam legislation: An analysis of laws and their effectiveness,” Information and Communications Technology Law, vol. 16, no. 1, pp. 17–32, 2007.' mla: 'Schryen, Guido. “Anti-Spam Legislation: An Analysis of Laws and Their Effectiveness.” Information and Communications Technology Law, vol. 16, no. 1, Taylor \& Francis, 2007, pp. 17–32.' short: G. Schryen, Information and Communications Technology Law 16 (2007) 17–32. date_created: 2018-11-14T14:45:57Z date_updated: 2022-01-06T07:02:21Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:25:48Z date_updated: 2018-12-18T13:25:48Z file_id: '6325' file_name: JOUNAL_VERSION.pdf file_size: 175248 relation: main_file file_date_updated: 2018-12-18T13:25:48Z has_accepted_license: '1' intvolume: ' 16' issue: '1' language: - iso: eng oa: '1' page: 17-32 publication: Information and Communications Technology Law publisher: Taylor \& Francis status: public title: 'Anti-spam legislation: An analysis of laws and their effectiveness' type: journal_article user_id: '61579' volume: 16 year: '2007' ... --- _id: '5653' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Approaches Addressing Spam. In: Satesh D, Prabhakar R, eds. Spam: An Introduction. Hyderabad, India: ICFAI University Press; 2007:41-57.' apa: 'Schryen, G. (2007). Approaches Addressing Spam. In D. Satesh & R. Prabhakar (Eds.), Spam: An Introduction (pp. 41–57). Hyderabad, India: ICFAI University Press.' bibtex: '@inbook{Schryen_2007, place={Hyderabad, India}, title={Approaches Addressing Spam}, booktitle={Spam: An Introduction}, publisher={ICFAI University Press}, author={Schryen, Guido}, editor={Satesh, D. and Prabhakar, R.Editors}, year={2007}, pages={41–57} }' chicago: 'Schryen, Guido. “Approaches Addressing Spam.” In Spam: An Introduction, edited by D. Satesh and R. Prabhakar, 41–57. Hyderabad, India: ICFAI University Press, 2007.' ieee: 'G. Schryen, “Approaches Addressing Spam,” in Spam: An Introduction, D. Satesh and R. Prabhakar, Eds. Hyderabad, India: ICFAI University Press, 2007, pp. 41–57.' mla: 'Schryen, Guido. “Approaches Addressing Spam.” Spam: An Introduction, edited by D. Satesh and R. Prabhakar, ICFAI University Press, 2007, pp. 41–57.' short: 'G. Schryen, in: D. Satesh, R. Prabhakar (Eds.), Spam: An Introduction, ICFAI University Press, Hyderabad, India, 2007, pp. 41–57.' date_created: 2018-11-14T14:46:28Z date_updated: 2022-01-06T07:02:21Z department: - _id: '277' editor: - first_name: D. full_name: Satesh, D. last_name: Satesh - first_name: R. full_name: Prabhakar, R. last_name: Prabhakar extern: '1' language: - iso: eng page: 41-57 place: Hyderabad, India publication: 'Spam: An Introduction' publisher: ICFAI University Press status: public title: Approaches Addressing Spam type: book_chapter user_id: '61579' year: '2007' ... --- _id: '5654' abstract: - lang: eng text: Spamming remains a form of Internet abuse, which burdens the Internet infrastructure, is generally regarded as an annoyance, and is said to cause economic harm to the tune of about several billion US\$ per year. Many technological, organizational, and legislative anti-spam measures have already been proposed and implemented, but have not led to any substantial decrease in the number of spam e-mails. We propose here a new infrastructure framework that combines several anti-spam measures in a framework that features both a technological and an organizational facet. The key element of our infrastructure is a new organizational unit that reliably and transparently limits he number of e-mails that can be sent per day and per account. This paper first gives an overview of the framework, then it provides technological and organizational details of the infrastructure, the deployment of which depends to a large degree on its acceptance and propagation by the ICANN, the ISOC, and by large e-mail service providers. Finally, the paper discusses the limitations and drawbacks of the proposed framework. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Armed for the spam battle - a technological and organizational infrastructure framework. In: 40th Annual Hawaii International Conference on System Sciences. ; 2007.' apa: Schryen, G. (2007). Armed for the spam battle - a technological and organizational infrastructure framework. In 40th Annual Hawaii International Conference on System Sciences. bibtex: '@inproceedings{Schryen_2007, title={Armed for the spam battle - a technological and organizational infrastructure framework}, booktitle={40th Annual Hawaii International Conference on System Sciences}, author={Schryen, Guido}, year={2007} }' chicago: Schryen, Guido. “Armed for the Spam Battle - a Technological and Organizational Infrastructure Framework.” In 40th Annual Hawaii International Conference on System Sciences, 2007. ieee: G. Schryen, “Armed for the spam battle - a technological and organizational infrastructure framework,” in 40th Annual Hawaii International Conference on System Sciences, 2007. mla: Schryen, Guido. “Armed for the Spam Battle - a Technological and Organizational Infrastructure Framework.” 40th Annual Hawaii International Conference on System Sciences, 2007. short: 'G. Schryen, in: 40th Annual Hawaii International Conference on System Sciences, 2007.' date_created: 2018-11-14T14:46:49Z date_updated: 2022-01-06T07:02:21Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:24:34Z date_updated: 2018-12-18T13:24:34Z file_id: '6323' file_name: Armed for the spam battle - a technological and organizational infrastructure framework - proceeding version.pdf file_size: 338482 relation: main_file file_date_updated: 2018-12-18T13:24:34Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: 40th Annual Hawaii International Conference on System Sciences status: public title: Armed for the spam battle - a technological and organizational infrastructure framework type: conference user_id: '61579' year: '2007' ... --- _id: '5655' abstract: - lang: eng text: Spam e-mails have become a serious technological and economic problem. Up to now, by deploying complementary anti-spam measures, we have been reasonably able to withstand spam e-mails and use the Internet for regular communication. However, if we are to avert the danger of losing the Internet e-mail service in its capacity as a valuable, free and worldwide medium of open communication, anti-spam activities should be performed more systematically than is currently the case regarding the mainly heuristic, anti-spam measures in place. A formal framework, within which the existing delivery routes that a spam e-mail may take, and anti-spam measures and their effectiveness can be investigated, will perhaps encourage a shift in methodology and pave the way for new, holistic anti-spam measures. This paper presents a model of the Internet e-mail infrastructure as a directed graph and a deterministic finite automaton and draws on automata theory to formally derive the spam delivery routes. The most important anti-spam measures are then described. Methods controlling only specific delivery routes are evaluated in terms of how effectively they cover the modeled e-mail infrastructure; methods operating independently of any particular routes receive a more general assessment. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: Schryen G. Do anti-spam measures effectively cover the e-mail communication network? A formal approach. The Journal of Information Systems Security (AIS Special Interest Group in Security). 2007;3(2):66-90. apa: Schryen, G. (2007). Do anti-spam measures effectively cover the e-mail communication network? A formal approach. The Journal of Information Systems Security (AIS Special Interest Group in Security), 3(2), 66–90. bibtex: '@article{Schryen_2007, title={Do anti-spam measures effectively cover the e-mail communication network? A formal approach}, volume={3}, number={2}, journal={The Journal of Information Systems Security (AIS Special Interest Group in Security)}, author={Schryen, Guido}, year={2007}, pages={66–90} }' chicago: 'Schryen, Guido. “Do Anti-Spam Measures Effectively Cover the e-Mail Communication Network? A Formal Approach.” The Journal of Information Systems Security (AIS Special Interest Group in Security) 3, no. 2 (2007): 66–90.' ieee: G. Schryen, “Do anti-spam measures effectively cover the e-mail communication network? A formal approach,” The Journal of Information Systems Security (AIS Special Interest Group in Security), vol. 3, no. 2, pp. 66–90, 2007. mla: Schryen, Guido. “Do Anti-Spam Measures Effectively Cover the e-Mail Communication Network? A Formal Approach.” The Journal of Information Systems Security (AIS Special Interest Group in Security), vol. 3, no. 2, 2007, pp. 66–90. short: G. Schryen, The Journal of Information Systems Security (AIS Special Interest Group in Security) 3 (2007) 66–90. date_created: 2018-11-14T14:51:41Z date_updated: 2022-01-06T07:02:22Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:25:12Z date_updated: 2018-12-18T13:25:12Z file_id: '6324' file_name: Do anti-spam measures effectively cover the e-mail communication - Journal version.pdf file_size: 100448 relation: main_file file_date_updated: 2018-12-18T13:25:12Z has_accepted_license: '1' intvolume: ' 3' issue: '2' keyword: - e-mail - spam - e-mail infrastructure - anti-spam measures - spamming options language: - iso: eng oa: '1' page: 66-90 publication: The Journal of Information Systems Security (AIS Special Interest Group in Security) status: public title: Do anti-spam measures effectively cover the e-mail communication network? A formal approach type: journal_article user_id: '61579' volume: 3 year: '2007' ... --- _id: '5656' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Location Based Services. In: Schulte H, ed. Vom LAN Zum Kommunikationsnetz - Systeme Und Applikationen. Kissing: Interest-Verlag; 2007.' apa: 'Schryen, G. (2007). Location Based Services. In H. Schulte (Ed.), Vom LAN zum Kommunikationsnetz - Systeme und Applikationen. Kissing: Interest-Verlag.' bibtex: '@inbook{Schryen_2007, place={Kissing}, title={Location Based Services}, booktitle={Vom LAN zum Kommunikationsnetz - Systeme und Applikationen}, publisher={Interest-Verlag}, author={Schryen, Guido}, editor={Schulte, HeinzEditor}, year={2007} }' chicago: 'Schryen, Guido. “Location Based Services.” In Vom LAN Zum Kommunikationsnetz - Systeme Und Applikationen, edited by Heinz Schulte. Kissing: Interest-Verlag, 2007.' ieee: 'G. Schryen, “Location Based Services,” in Vom LAN zum Kommunikationsnetz - Systeme und Applikationen, H. Schulte, Ed. Kissing: Interest-Verlag, 2007.' mla: Schryen, Guido. “Location Based Services.” Vom LAN Zum Kommunikationsnetz - Systeme Und Applikationen, edited by Heinz Schulte, Interest-Verlag, 2007. short: 'G. Schryen, in: H. Schulte (Ed.), Vom LAN Zum Kommunikationsnetz - Systeme Und Applikationen, Interest-Verlag, Kissing, 2007.' date_created: 2018-11-14T14:52:09Z date_updated: 2022-01-06T07:02:22Z department: - _id: '277' editor: - first_name: Heinz full_name: Schulte, Heinz last_name: Schulte extern: '1' language: - iso: eng place: Kissing publication: Vom LAN zum Kommunikationsnetz - Systeme und Applikationen publisher: Interest-Verlag status: public title: Location Based Services type: book_chapter user_id: '61579' year: '2007' ... --- _id: '5657' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Spam-Emails. In: Schulte H, ed. Vom LAN Zum Kommunikationsnetz - Systeme Und Applikationen, Edition 02/2007. Vol 9/12. Kissing: Interest-Verlag; 2007.' apa: 'Schryen, G. (2007). Spam-Emails. In H. Schulte (Ed.), Vom LAN zum Kommunikationsnetz - Systeme und Applikationen, Edition 02/2007 (Vol. 9/12). Kissing: Interest-Verlag.' bibtex: '@inbook{Schryen_2007, place={Kissing}, title={Spam-Emails}, volume={9/12}, booktitle={Vom LAN zum Kommunikationsnetz - Systeme und Applikationen, Edition 02/2007}, publisher={Interest-Verlag}, author={Schryen, Guido}, editor={Schulte, HeinzEditor}, year={2007} }' chicago: 'Schryen, Guido. “Spam-Emails.” In Vom LAN Zum Kommunikationsnetz - Systeme Und Applikationen, Edition 02/2007, edited by Heinz Schulte, Vol. 9/12. Kissing: Interest-Verlag, 2007.' ieee: 'G. Schryen, “Spam-Emails,” in Vom LAN zum Kommunikationsnetz - Systeme und Applikationen, Edition 02/2007, vol. 9/12, H. Schulte, Ed. Kissing: Interest-Verlag, 2007.' mla: Schryen, Guido. “Spam-Emails.” Vom LAN Zum Kommunikationsnetz - Systeme Und Applikationen, Edition 02/2007, edited by Heinz Schulte, vol. 9/12, Interest-Verlag, 2007. short: 'G. Schryen, in: H. Schulte (Ed.), Vom LAN Zum Kommunikationsnetz - Systeme Und Applikationen, Edition 02/2007, Interest-Verlag, Kissing, 2007.' date_created: 2018-11-14T14:52:32Z date_updated: 2022-01-06T07:02:22Z department: - _id: '277' editor: - first_name: Heinz full_name: Schulte, Heinz last_name: Schulte extern: '1' language: - iso: eng place: Kissing publication: Vom LAN zum Kommunikationsnetz - Systeme und Applikationen, Edition 02/2007 publisher: Interest-Verlag status: public title: Spam-Emails type: book_chapter user_id: '61579' volume: 9/12 year: '2007' ... --- _id: '5658' abstract: - lang: eng text: 'Email communication is encumbered with a mass of email messages which their recipients have neither requested nor require. Even worse, the impacts of these messages are far from being simply an annoyance, as they also involve economic damage. This manuscript examines the resource ?email addresses?, which is vital for any potential bulk mailer and spammer. Both a methodology and a honeypot conceptualization for implementing an empirical analysis of the usage of email addresses placed on the Internet are proposed here. Their objective is to assess, on a quantitative basis, the extent of the current harassment and its development over time. This ?framework? is intended to be extensible to measuring the effectiveness of address-obscuring techniques. The implementation of a pilot honeypot is described, which led to key findings, some of them being: (1) Web placements attract more than two-thirds (70\%) of all honeypot spam emails, followed by newsgroup placements (28.6\%) and newsletter subscriptions (1.4\%), (2) the proportions of spam relating to the email addresses? top-level domain can be statistically assumed to be uniformly distributed, (3) More than 43\% of addresses on the web have been abused, whereas about 27\% was the case for addresses on newsgroups and only about 4\% was the case for addresses used for a newsletter subscription, (4) Regarding the development of email addresses? attractiveness for spammers over time, the service ?web sites? features a negative linear relationship, whereas the service ?Usenet? hows a negative exponential relationship. (5) Only 1.54\% of the spam emails showed an interrelation between the topic of the spam email and that of the location where the recipient?s address was placed, so that spammers are assumed to send their emails in a ?context insensitive? manner. The results of the empirical analysis motivate the need for the protection of email addresses through obscuration. We analyze this need by formulating requirements for address obscuring techniques and we reveal to which extent today?s most relevant approaches fulfill these requirements.' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: Schryen G. The Impact that Placing Email Addresses on the Internet has on the Receipt of Spam ? An Empirical Analysis. Computers & Security. 2007;2(5):361-372. apa: Schryen, G. (2007). The Impact that Placing Email Addresses on the Internet has on the Receipt of Spam ? An Empirical Analysis. Computers & Security, 2(5), 361–372. bibtex: '@article{Schryen_2007, title={The Impact that Placing Email Addresses on the Internet has on the Receipt of Spam ? An Empirical Analysis}, volume={2}, number={5}, journal={Computers & Security}, publisher={Elsevier}, author={Schryen, Guido}, year={2007}, pages={361–372} }' chicago: 'Schryen, Guido. “The Impact That Placing Email Addresses on the Internet Has on the Receipt of Spam ? An Empirical Analysis.” Computers & Security 2, no. 5 (2007): 361–72.' ieee: G. Schryen, “The Impact that Placing Email Addresses on the Internet has on the Receipt of Spam ? An Empirical Analysis,” Computers & Security, vol. 2, no. 5, pp. 361–372, 2007. mla: Schryen, Guido. “The Impact That Placing Email Addresses on the Internet Has on the Receipt of Spam ? An Empirical Analysis.” Computers & Security, vol. 2, no. 5, Elsevier, 2007, pp. 361–72. short: G. Schryen, Computers & Security 2 (2007) 361–372. date_created: 2018-11-14T14:53:12Z date_updated: 2022-01-06T07:02:22Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:27:01Z date_updated: 2018-12-18T13:27:01Z file_id: '6326' file_name: The Impact that Placing Email Addresses on the Internet has on the Receipt of Spam - An Empirical Analysis - Journal version.pdf file_size: 3026200 relation: main_file file_date_updated: 2018-12-18T13:27:01Z has_accepted_license: '1' intvolume: ' 2' issue: '5' keyword: - Address-obfuscating techniques - email - empirical analysis - honeypot - security by design - security by obscurity - spam language: - iso: eng oa: '1' page: 361-372 publication: Computers & Security publisher: Elsevier status: public title: The Impact that Placing Email Addresses on the Internet has on the Receipt of Spam ? An Empirical Analysis type: journal_article user_id: '61579' volume: 2 year: '2007' ... --- _id: '5659' abstract: - lang: eng text: Spam e-mails have become a serious technological and economic problem. So far we have been reasonably able to resist spam e-mails and use the Internet for regular communication by deploying complementary anti-spam approaches. However, if we are to avert the danger of losing the Internet email service as a valuable, free, and worldwide medium of open communication, anti-spam activities should be performed more systematically than is done in current, mainly heuristic, anti-spam approaches. A formal framework within which the modes of spam delivery, anti-spam approaches, and their effectiveness can be investigated, may encourage a shift in methodology and pave the way for new, holistic anti-spam approaches. This paper presents a model of the Internet e-mail infrastructure as a directed graph and a deterministic finite automaton, and draws on automata theory to formally derive the modes of spam delivery possible. Finally the effectiveness of anti-spam approaches in terms of coverage of spamming modes is assessed. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. A formal approach towards assessing the effectiveness of anti-spam procedures. In: 39th Annual Hawaii International Conference on System Sciences. ; 2006.' apa: Schryen, G. (2006). A formal approach towards assessing the effectiveness of anti-spam procedures. In 39th Annual Hawaii International Conference on System Sciences. bibtex: '@inproceedings{Schryen_2006, title={A formal approach towards assessing the effectiveness of anti-spam procedures}, booktitle={39th Annual Hawaii International Conference on System Sciences}, author={Schryen, Guido}, year={2006} }' chicago: Schryen, Guido. “A Formal Approach towards Assessing the Effectiveness of Anti-Spam Procedures.” In 39th Annual Hawaii International Conference on System Sciences, 2006. ieee: G. Schryen, “A formal approach towards assessing the effectiveness of anti-spam procedures,” in 39th Annual Hawaii International Conference on System Sciences, 2006. mla: Schryen, Guido. “A Formal Approach towards Assessing the Effectiveness of Anti-Spam Procedures.” 39th Annual Hawaii International Conference on System Sciences, 2006. short: 'G. Schryen, in: 39th Annual Hawaii International Conference on System Sciences, 2006.' date_created: 2018-11-14T14:54:44Z date_updated: 2022-01-06T07:02:22Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:29:29Z date_updated: 2018-12-18T13:29:29Z file_id: '6327' file_name: Conference Version - A formal approach towards assessing the effectiveness of anti spam approaches.pdf file_size: 176033 relation: main_file file_date_updated: 2018-12-18T13:29:29Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: 39th Annual Hawaii International Conference on System Sciences status: public title: A formal approach towards assessing the effectiveness of anti-spam procedures type: conference user_id: '61579' year: '2006' ... --- _id: '5660' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: Schryen G. A honeypot for the exploration of spammers’ behaviour. IATAC IAnewsletter. 2005;8(3):22-25. apa: Schryen, G. (2005). A honeypot for the exploration of spammers’ behaviour. IATAC IAnewsletter, 8(3), 22–25. bibtex: '@article{Schryen_2005, title={A honeypot for the exploration of spammers’ behaviour}, volume={8}, number={3}, journal={IATAC IAnewsletter}, publisher={United States Department of Defense}, author={Schryen, Guido}, year={2005}, pages={22–25} }' chicago: 'Schryen, Guido. “A Honeypot for the Exploration of Spammers’ Behaviour.” IATAC IAnewsletter 8, no. 3 (2005): 22–25.' ieee: G. Schryen, “A honeypot for the exploration of spammers’ behaviour,” IATAC IAnewsletter, vol. 8, no. 3, pp. 22–25, 2005. mla: Schryen, Guido. “A Honeypot for the Exploration of Spammers’ Behaviour.” IATAC IAnewsletter, vol. 8, no. 3, United States Department of Defense, 2005, pp. 22–25. short: G. Schryen, IATAC IAnewsletter 8 (2005) 22–25. date_created: 2018-11-14T14:55:09Z date_updated: 2022-01-06T07:02:24Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:31:04Z date_updated: 2018-12-18T13:31:04Z file_id: '6330' file_name: Honeypot for the Exploration of Spammers Behavior - journal version.pdf file_size: 3394223 relation: main_file file_date_updated: 2018-12-18T13:31:04Z has_accepted_license: '1' intvolume: ' 8' issue: '3' language: - iso: eng oa: '1' page: 22-25 publication: IATAC IAnewsletter publisher: United States Department of Defense status: public title: A honeypot for the exploration of spammers' behaviour type: journal_article user_id: '61579' volume: 8 year: '2005' ... --- _id: '5661' abstract: - lang: eng text: Spam has become one of the most annoying and costly phenomenon in the Internet. Valid e-mail addresses belong to the most valuable resources of spammers, but little is known about spammers? behavior when collecting and harvesting addresses and spammers? capabilities and interest in carefully directed, consumer-oriented marketing have not been explored yet. Gaining insight into spammers? ways to obtain and (mis)use e-mail addresses is useful in many ways, e.g. for the assessment of the effectiveness of address obscuring techniques and the usability and necessity of hiding e-mail addresses on the Internet. This paper presents a spam honeypot project in progress addressing these issues by systematically placing e-mail addresses in the Internet and analyzing received e-mails. The honeypot?s conceptual framework, its implementation, and first empirical results are presented. Finally, an outlook on further work and activities is provided. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. An e-mail honeypot addressing spammers’ behavior in collecting and applying addresses. In: Proceedings of the 6th IEEE Information Assurance Workshop. Westpoint; 2005:37-41.' apa: Schryen, G. (2005). An e-mail honeypot addressing spammers’ behavior in collecting and applying addresses. In Proceedings of the 6th IEEE Information Assurance Workshop (pp. 37–41). Westpoint. bibtex: '@inproceedings{Schryen_2005, title={An e-mail honeypot addressing spammers’ behavior in collecting and applying addresses}, booktitle={Proceedings of the 6th IEEE Information Assurance Workshop}, publisher={Westpoint}, author={Schryen, Guido}, year={2005}, pages={37–41} }' chicago: Schryen, Guido. “An E-Mail Honeypot Addressing Spammers’ Behavior in Collecting and Applying Addresses.” In Proceedings of the 6th IEEE Information Assurance Workshop, 37–41. Westpoint, 2005. ieee: G. Schryen, “An e-mail honeypot addressing spammers’ behavior in collecting and applying addresses,” in Proceedings of the 6th IEEE Information Assurance Workshop, 2005, pp. 37–41. mla: Schryen, Guido. “An E-Mail Honeypot Addressing Spammers’ Behavior in Collecting and Applying Addresses.” Proceedings of the 6th IEEE Information Assurance Workshop, Westpoint, 2005, pp. 37–41. short: 'G. Schryen, in: Proceedings of the 6th IEEE Information Assurance Workshop, Westpoint, 2005, pp. 37–41.' date_created: 2018-11-14T14:55:48Z date_updated: 2022-01-06T07:02:24Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:31:41Z date_updated: 2018-12-18T13:31:41Z file_id: '6331' file_name: Schryen - An e-mail honeypot addressing spammers' behavior in collecting and applying addresses.pdf file_size: 119362 relation: main_file file_date_updated: 2018-12-18T13:31:41Z has_accepted_license: '1' keyword: - Spam - ham - e-mail - honeypot - address obscuring technique - address taxonomy language: - iso: eng oa: '1' page: 37-41 publication: Proceedings of the 6th IEEE Information Assurance Workshop publisher: Westpoint status: public title: An e-mail honeypot addressing spammers' behavior in collecting and applying addresses type: conference user_id: '61579' year: '2005' ... --- _id: '5765' abstract: - lang: eng text: Voting via the Internet has become a feasible option for political as well as non-political ballots. However, there are many obstacles which have to be overcome, especially legal restrictions have to be transformed into technical and security solutions. The article starts with a brief presentation of advantages and disadvantages of Internet ballots and presents application fields and pilot schemes. Then, technological security aspects are derived due to democratic basic principles. Especially the applied voting procedures are critical in security terms. Hence, the most relevant cryptographic protocols are presented and their drawbacks and shortcomings are identified. However, this article does not propose a new voting protocol. Beyond fixing cryptographic procedures for ballots, more elements are to be specified, e.g. responsibilities and rights of involved authorities or security precautions regarding hardware and software. For this reason, a structural security framework for electronic voting systems is presented which can be used for their composition and analysis. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Security Aspects of Internet Voting. In: 37th Annual Hawaii International Conference on System Sciences. ; 2004.' apa: Schryen, G. (2004). Security Aspects of Internet Voting. In 37th Annual Hawaii International Conference on System Sciences. bibtex: '@inproceedings{Schryen_2004, title={Security Aspects of Internet Voting}, booktitle={37th Annual Hawaii International Conference on System Sciences}, author={Schryen, Guido}, year={2004} }' chicago: Schryen, Guido. “Security Aspects of Internet Voting.” In 37th Annual Hawaii International Conference on System Sciences, 2004. ieee: G. Schryen, “Security Aspects of Internet Voting,” in 37th Annual Hawaii International Conference on System Sciences, 2004. mla: Schryen, Guido. “Security Aspects of Internet Voting.” 37th Annual Hawaii International Conference on System Sciences, 2004. short: 'G. Schryen, in: 37th Annual Hawaii International Conference on System Sciences, 2004.' date_created: 2018-11-20T13:02:25Z date_updated: 2022-01-06T07:02:39Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:32:44Z date_updated: 2018-12-18T13:32:44Z file_id: '6332' file_name: Conference version - Security Aspects of Internet Voting.pdf file_size: 385671 relation: main_file file_date_updated: 2018-12-18T13:32:44Z has_accepted_license: '1' language: - iso: eng oa: '1' publication: 37th Annual Hawaii International Conference on System Sciences status: public title: Security Aspects of Internet Voting type: conference user_id: '61579' year: '2004' ... --- _id: '5662' abstract: - lang: eng text: Spam als unerwünschte Massen-E-Mail hat die Grenze von der Belästigung zur ökonomischen Relevanz längst überschritten. Ihr relativer Anteil am gesamten, weltweiten E-Mail-Aufkommen stieg in den vergangenen Jahren auf mehr als 50% im Jahr 2003. Es entstehen jährlich volkswirtschaftliche Schäden in Milliardenhöhe. Zur Bekämpfung des Spam-Problems werden neben gesetzlichen Regelungen vor allem technische Lösungen eingesetzt, bei denen das Blockieren und Filtern von E-Mails in praktisch eingesetzten Anti-Spam-Systemen dominieren. Dieser Artikel führt in die Spam-Problematik ein und beschreibt, bewertet und klassifiziert die derzeit bedeutendsten Verfahren zur Bekämpfung von Spam. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: Schryen G. Effektivität von Lösungsansätzen zur Bekämpfung von Spam. Wirtschaftsinformatik. 2004;46(4):281-288. apa: Schryen, G. (2004). Effektivität von Lösungsansätzen zur Bekämpfung von Spam. Wirtschaftsinformatik, 46(4), 281–288. bibtex: '@article{Schryen_2004, title={Effektivität von Lösungsansätzen zur Bekämpfung von Spam}, volume={46}, number={4}, journal={Wirtschaftsinformatik}, publisher={Springer}, author={Schryen, Guido}, year={2004}, pages={281–288} }' chicago: 'Schryen, Guido. “Effektivität von Lösungsansätzen Zur Bekämpfung von Spam.” Wirtschaftsinformatik 46, no. 4 (2004): 281–88.' ieee: G. Schryen, “Effektivität von Lösungsansätzen zur Bekämpfung von Spam,” Wirtschaftsinformatik, vol. 46, no. 4, pp. 281–288, 2004. mla: Schryen, Guido. “Effektivität von Lösungsansätzen Zur Bekämpfung von Spam.” Wirtschaftsinformatik, vol. 46, no. 4, Springer, 2004, pp. 281–88. short: G. Schryen, Wirtschaftsinformatik 46 (2004) 281–288. date_created: 2018-11-14T14:56:51Z date_updated: 2022-01-06T07:02:24Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:36:34Z date_updated: 2018-12-18T13:36:34Z file_id: '6338' file_name: Verlagsversion Guido_Schryen__281__288.pdf file_size: 288686 relation: main_file file_date_updated: 2018-12-18T13:36:34Z has_accepted_license: '1' intvolume: ' 46' issue: '4' keyword: - Spam - E-Mail - Spoofing - Blockieren - Filtern - Lightweight Mail Transfer Agent Authentication Protocol (LMAP) language: - iso: eng oa: '1' page: 281-288 publication: Wirtschaftsinformatik publisher: Springer status: public title: Effektivität von Lösungsansätzen zur Bekämpfung von Spam type: journal_article user_id: '61579' volume: 46 year: '2004' ... --- _id: '5663' abstract: - lang: eng text: Spam as unsolicited e-mail to a large number of recipients is known to ecome an increasingly disturbing and costly issue of electronic business and internet traffic. Mainly technical-oriented approaches are applied with a focus on blocking, filtering, and authentication mechanisms based on the domain name system. They come along with different drawbacks and have all low effectiveness in common. The article sketches these approaches, shows its limitations, and proposes an account-based approach where the number of e-mails per day and account is restricted. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Fighting Spam: Motivating an Account-based Approach. In: Isaias P, ed. Proceedings of the IADIS International Conference WWW/Internet 2004. Vol. 2. Madrid: IADIS Press; 2004:937-940.' apa: 'Schryen, G. (2004). Fighting Spam: Motivating an Account-based Approach. In P. Isaias (Ed.), Proceedings of the IADIS International Conference WWW/Internet 2004. vol. 2 (pp. 937–940). Madrid: IADIS Press.' bibtex: '@inproceedings{Schryen_2004, place={Madrid}, title={Fighting Spam: Motivating an Account-based Approach}, booktitle={Proceedings of the IADIS International Conference WWW/Internet 2004. vol. 2}, publisher={IADIS Press}, author={Schryen, Guido}, editor={Isaias, PedroEditor}, year={2004}, pages={937–940} }' chicago: 'Schryen, Guido. “Fighting Spam: Motivating an Account-Based Approach.” In Proceedings of the IADIS International Conference WWW/Internet 2004. Vol. 2, edited by Pedro Isaias, 937–40. Madrid: IADIS Press, 2004.' ieee: 'G. Schryen, “Fighting Spam: Motivating an Account-based Approach,” in Proceedings of the IADIS International Conference WWW/Internet 2004. vol. 2, 2004, pp. 937–940.' mla: 'Schryen, Guido. “Fighting Spam: Motivating an Account-Based Approach.” Proceedings of the IADIS International Conference WWW/Internet 2004. Vol. 2, edited by Pedro Isaias, IADIS Press, 2004, pp. 937–40.' short: 'G. Schryen, in: P. Isaias (Ed.), Proceedings of the IADIS International Conference WWW/Internet 2004. Vol. 2, IADIS Press, Madrid, 2004, pp. 937–940.' date_created: 2018-11-14T14:59:03Z date_updated: 2022-01-06T07:02:25Z ddc: - '000' department: - _id: '277' editor: - first_name: Pedro full_name: Isaias, Pedro last_name: Isaias extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:33:30Z date_updated: 2018-12-18T13:33:30Z file_id: '6333' file_name: Fighting Spam_Motivating an account-based approach.pdf file_size: 46083 relation: main_file file_date_updated: 2018-12-18T13:33:30Z has_accepted_license: '1' keyword: - e-mail - spam - filtering - blocking - LMAP - SMTP account language: - iso: eng oa: '1' page: 937-940 place: Madrid publication: Proceedings of the IADIS International Conference WWW/Internet 2004. vol. 2 publisher: IADIS Press status: public title: 'Fighting Spam: Motivating an Account-based Approach' type: conference user_id: '61579' year: '2004' ... --- _id: '5664' abstract: - lang: eng text: Remote Internet voting systems still suffer from many security problems which rely on the clients, the servers, and the network connections. Denial-ofservice attacks and viruses still belong to the most challenging security issues. Projects and studies like the ?Voting Technology Project? of CALTECH and MIT or SERVE of the US Department of Defense set up to gain experience evidence many of the notional weaknesses of current Internet voting systems. author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. How Security Problems Can Compromise Remote Internet Voting Systems. In: Workshop of the ESF TED Programme. ; 2004:121-131.' apa: Schryen, G. (2004). How Security Problems Can Compromise Remote Internet Voting Systems. In Workshop of the ESF TED Programme (pp. 121–131). bibtex: '@inproceedings{Schryen_2004, title={How Security Problems Can Compromise Remote Internet Voting Systems}, booktitle={Workshop of the ESF TED Programme}, author={Schryen, Guido}, year={2004}, pages={121–131} }' chicago: Schryen, Guido. “How Security Problems Can Compromise Remote Internet Voting Systems.” In Workshop of the ESF TED Programme, 121–31, 2004. ieee: G. Schryen, “How Security Problems Can Compromise Remote Internet Voting Systems,” in Workshop of the ESF TED Programme, 2004, pp. 121–131. mla: Schryen, Guido. “How Security Problems Can Compromise Remote Internet Voting Systems.” Workshop of the ESF TED Programme, 2004, pp. 121–31. short: 'G. Schryen, in: Workshop of the ESF TED Programme, 2004, pp. 121–131.' date_created: 2018-11-14T14:59:31Z date_updated: 2022-01-06T07:02:25Z ddc: - '000' department: - _id: '277' extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:34:32Z date_updated: 2018-12-18T13:34:32Z file_id: '6335' file_name: Official paper schryen_e-voting_in_europe.pdf file_size: 516042 relation: main_file file_date_updated: 2018-12-18T13:34:32Z has_accepted_license: '1' language: - iso: eng oa: '1' page: 121-131 publication: Workshop of the ESF TED Programme status: public title: How Security Problems Can Compromise Remote Internet Voting Systems type: conference user_id: '61579' year: '2004' ... --- _id: '5666' author: - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Schryen G. Neulich am Hotspot - Bringt Mobiles Internet die Menschen ins Netz? In: Gehrke G, ed. Digitale Teilung - Digitale Integration : Perspektiven Der Internetnutzung. München: KOPAED-Verlag; 2004:45-51.' apa: 'Schryen, G. (2004). Neulich am Hotspot - Bringt Mobiles Internet die Menschen ins Netz? In G. Gehrke (Ed.), Digitale Teilung - digitale Integration : Perspektiven der Internetnutzung (pp. 45–51). München: KOPAED-Verlag.' bibtex: '@inbook{Schryen_2004, place={München}, title={Neulich am Hotspot - Bringt Mobiles Internet die Menschen ins Netz?}, booktitle={Digitale Teilung - digitale Integration : Perspektiven der Internetnutzung}, publisher={KOPAED-Verlag}, author={Schryen, Guido}, editor={Gehrke, GernotEditor}, year={2004}, pages={45–51} }' chicago: 'Schryen, Guido. “Neulich Am Hotspot - Bringt Mobiles Internet Die Menschen Ins Netz?” In Digitale Teilung - Digitale Integration : Perspektiven Der Internetnutzung, edited by Gernot Gehrke, 45–51. München: KOPAED-Verlag, 2004.' ieee: 'G. Schryen, “Neulich am Hotspot - Bringt Mobiles Internet die Menschen ins Netz?,” in Digitale Teilung - digitale Integration : Perspektiven der Internetnutzung, G. Gehrke, Ed. München: KOPAED-Verlag, 2004, pp. 45–51.' mla: 'Schryen, Guido. “Neulich Am Hotspot - Bringt Mobiles Internet Die Menschen Ins Netz?” Digitale Teilung - Digitale Integration : Perspektiven Der Internetnutzung, edited by Gernot Gehrke, KOPAED-Verlag, 2004, pp. 45–51.' short: 'G. Schryen, in: G. Gehrke (Ed.), Digitale Teilung - Digitale Integration : Perspektiven Der Internetnutzung, KOPAED-Verlag, München, 2004, pp. 45–51.' date_created: 2018-11-14T15:00:48Z date_updated: 2022-01-06T07:02:25Z ddc: - '000' department: - _id: '277' editor: - first_name: Gernot full_name: Gehrke, Gernot last_name: Gehrke extern: '1' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2018-12-18T13:35:32Z date_updated: 2018-12-18T13:35:32Z file_id: '6337' file_name: Schryen - Neulich am Hot Spot.pdf file_size: 121468 relation: main_file file_date_updated: 2018-12-18T13:35:32Z has_accepted_license: '1' language: - iso: eng oa: '1' page: 45-51 place: München publication: 'Digitale Teilung - digitale Integration : Perspektiven der Internetnutzung' publisher: KOPAED-Verlag status: public title: Neulich am Hotspot - Bringt Mobiles Internet die Menschen ins Netz? type: book_chapter user_id: '61579' year: '2004' ...