@article{5648, author = {{Schryen, Guido}}, journal = {{Linux Technical Review}}, number = {{7}}, publisher = {{Linux New Media AG}}, title = {{{Effektivität und Effizienz von Anti-Spam-Maßnahmen}}}, year = {{2008}}, } @inproceedings{5649, abstract = {{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 = {{Schryen, Guido}}, booktitle = {{7th Workshop on e-Business (WEB 2008, AIS Special Interest Group on E-Business)}}, keywords = {{Internet voting, large-scale election, Estonian parliamen- tary election, security, security management}}, title = {{{Practical Security of Large-scale Elections: An Exploratory Case Study of Internet Voting in Estonia}}}, year = {{2008}}, } @techreport{6287, abstract = {{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 = {{Schryen, Guido}}, keywords = {{Email, Infrastructure, Internet, Spam}}, title = {{{Preventing E-mail Spam: The Conceptualization and the Analysis of an Infrastructure Framework}}}, year = {{2007}}, } @inbook{5650, author = {{Schryen, Guido}}, booktitle = {{Proceedings of IPSI International Conference on Advances in the Internet, Processing, Systems, and Interdisciplinary Research}}, editor = {{Satesh, D. and Prabhakar, R.}}, pages = {{55--64}}, publisher = {{ICFAI University Press}}, title = {{{A Scalable and Flexible Infrastructure Framework For Addressing Spam}}}, year = {{2007}}, } @book{5651, author = {{Schryen, Guido}}, publisher = {{Springer}}, title = {{{Anti-Spam Measures: Analysis and Design}}}, year = {{2007}}, } @article{5652, abstract = {{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 = {{Schryen, Guido}}, journal = {{Information and Communications Technology Law}}, number = {{1}}, pages = {{17--32}}, publisher = {{Taylor \& Francis}}, title = {{{Anti-spam legislation: An analysis of laws and their effectiveness}}}, volume = {{16}}, year = {{2007}}, } @inbook{5653, author = {{Schryen, Guido}}, booktitle = {{Spam: An Introduction}}, editor = {{Satesh, D. and Prabhakar, R.}}, pages = {{41--57}}, publisher = {{ICFAI University Press}}, title = {{{Approaches Addressing Spam}}}, year = {{2007}}, } @inproceedings{5654, abstract = {{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 = {{Schryen, Guido}}, booktitle = {{40th Annual Hawaii International Conference on System Sciences}}, title = {{{Armed for the spam battle - a technological and organizational infrastructure framework}}}, year = {{2007}}, } @article{5655, abstract = {{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 = {{Schryen, Guido}}, journal = {{The Journal of Information Systems Security (AIS Special Interest Group in Security)}}, keywords = {{e-mail, spam, e-mail infrastructure, anti-spam measures, spamming options}}, number = {{2}}, pages = {{66--90}}, title = {{{Do anti-spam measures effectively cover the e-mail communication network? A formal approach}}}, volume = {{3}}, year = {{2007}}, } @inbook{5656, author = {{Schryen, Guido}}, booktitle = {{Vom LAN zum Kommunikationsnetz - Systeme und Applikationen}}, editor = {{Schulte, Heinz}}, publisher = {{Interest-Verlag}}, title = {{{Location Based Services}}}, year = {{2007}}, }