@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}}, } @inbook{5657, author = {{Schryen, Guido}}, booktitle = {{Vom LAN zum Kommunikationsnetz - Systeme und Applikationen, Edition 02/2007}}, editor = {{Schulte, Heinz}}, publisher = {{Interest-Verlag}}, title = {{{Spam-Emails}}}, volume = {{9/12}}, year = {{2007}}, } @article{5658, abstract = {{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 = {{Schryen, Guido}}, journal = {{Computers & Security}}, keywords = {{Address-obfuscating techniques, email, empirical analysis, honeypot, security by design, security by obscurity, spam}}, number = {{5}}, pages = {{361--372}}, publisher = {{Elsevier}}, title = {{{The Impact that Placing Email Addresses on the Internet has on the Receipt of Spam ? An Empirical Analysis}}}, volume = {{2}}, year = {{2007}}, } @inproceedings{6508, abstract = {{In this paper, we present a framework that supports experimenting with evolutionary hardware design. We describe the framework's modules for composing evolutionary optimizers and for setting up, controlling, and analyzing experiments. Two case studies demonstrate the usefulness of the framework: evolution of hash functions and evolution based on pre-engineered circuits.}}, author = {{Kaufmann, Paul and Platzner, Marco}}, booktitle = {{Second NASA/ESA Conference on Adaptive Hardware and Systems (AHS 2007)}}, isbn = {{076952866X}}, keywords = {{integrated circuit design, hardware evolution, evolutionary hardware design, evolutionary optimizers, hash functions, preengineered circuits, Hardware, Circuits, Design optimization, Visualization, Genetic programming, Genetic mutations, Clustering algorithms, Biological cells, Field programmable gate arrays, Routing}}, location = {{Edinburgh, UK}}, pages = {{447--454}}, publisher = {{IEEE}}, title = {{{MOVES: A Modular Framework for Hardware Evolution}}}, doi = {{10.1109/ahs.2007.73}}, year = {{2007}}, } @article{6700, author = {{Bendfeld, Jörg and Ellinghaus, T. and al., et.}}, journal = {{Erneuerbare Energien}}, title = {{{Messen, testen, konstruieren}}}, volume = {{1}}, year = {{2007}}, } @inproceedings{6701, author = {{Bendfeld, Jörg and Splett, Michael and Voss, Jürgen and Higgen, Anne and Krieger, Jens}}, booktitle = {{Proceedings of the European Wind Energy Conference & Exhibition (EWEC 2007)}}, title = {{{Reliable and cost-effective design for an offshore metmast}}}, year = {{2007}}, } @inproceedings{6702, author = {{Bendfeld, Jörg and Splett, Michael and Voss, Jürgen}}, booktitle = {{Proceedings of the European Wind Energy Conference & Exhibition (EWEC 2007)}}, title = {{{Management for effective long term wind energy estimation at offshore wind plant locations}}}, year = {{2007}}, } @inproceedings{6703, author = {{Bendfeld, Jörg and Splett, Michael and Bastide, Camille and Voss, Jürgen}}, booktitle = {{Proceedings of the European Wind Energy Conference & Exhibition (EWEC 2007)}}, title = {{{Estimation of long term wind energy output at offshore wind farm locations}}}, year = {{2007}}, } @inproceedings{6704, author = {{Bendfeld, Jörg and Splett, Michael and Voss, Jürgen and Higgen, Anne and Krieger, Jens}}, booktitle = {{Proceedings of the European Wind Energy Conference & Exhibition (EWEC 2007)}}, title = {{{Two Years Operation of Offshore Metmast Amrumbank West in the German North Sea}}}, year = {{2007}}, } @inproceedings{6705, author = {{Bendfeld, Jörg and Splett, Michael and Voss, Jürgen and Higgen, Anne and Krieger, Jens}}, booktitle = {{Proceedings of the American Wind Energy Association, WINDPOWER 2007 Conference and Exhibition}}, title = {{{Design of a Multi Purpose Offshore Metmast}}}, year = {{2007}}, } @inproceedings{6706, author = {{Bendfeld, Jörg and Splett, Michael and Voss, Jürgen}}, booktitle = {{Proceedings of the American Wind Energy Association, WINDPOWER 2007 Conference and Exhibition}}, title = {{{Using NCEP/NCAR- Reanalysis-Data For the Estimation of Wind Energy Output for Offshore Windfarms}}}, year = {{2007}}, } @inproceedings{6707, author = {{Bendfeld, Jörg and Splett, Michael and Voss, Jürgen}}, booktitle = {{Proceedings of the American Wind Energy Association, WINDPOWER 2007 Conference and Exhibition}}, title = {{{Two Years Experiences with an Offshore Metmast for Wind Energy Research}}}, year = {{2007}}, } @inproceedings{6708, author = {{Bendfeld, Jörg and Splett, Michael and Voss, Jürgen}}, booktitle = {{Proceedings of the American Wind Energy Association, WINDPOWER 2007 Conference and Exhibition}}, title = {{{Load Management for Offshore Wind Parks}}}, year = {{2007}}, } @inbook{6709, author = {{Bendfeld, Jörg and Splett, Michael and Voss, Jürgen}}, booktitle = {{invited Special Report in international standard wind energy yearbook 2007/2008}}, title = {{{Private business financed offshore research stations in the German territorial waters }}}, year = {{2007}}, } @inproceedings{6710, author = {{Bendfeld, Jörg and Ditscherlein, Ralf and Splett, Michael and Voss, Jürgen}}, booktitle = {{Proceedings of the European Offshore Wind Conference & Exhibition (EOW 2007)}}, title = {{{The Performance of ADCP-Measurements and Comparision with Waverider-Data in the German Bight}}}, year = {{2007}}, } @inproceedings{6711, author = {{Bendfeld, Jörg and Ditscherlein, Ralf and Splett, Michael and Voss, Jürgen}}, booktitle = {{Proceedings of the European Offshore Wind Conference & Exhibition (EOW 2007)}}, title = {{{Offshore Metmast Arkonabecken Südost}}}, year = {{2007}}, } @inproceedings{6712, author = {{Bendfeld, Jörg and Ditscherlein, Ralf and Splett, Michael and Voss, Jürgen and Lüttig, Reinhold}}, booktitle = {{Proceedings of the European Offshore Wind Conference & Exhibition (EOW 2007)}}, title = {{{Analysis of wind energy fluctuations at Offshore wind farm locations}}}, year = {{2007}}, } @book{6751, author = {{Tönnies, Merle and Voigt, Ulrich}}, publisher = {{Narr Studienbücher}}, title = {{{Introduction to the Study of British Culture}}}, year = {{2007}}, } @inbook{6759, author = {{Tönnies, Merle}}, booktitle = {{Viewfinder Special. Lese-und Arbeitsbuch für die gymnasiale Oberstufe}}, editor = {{Freese, Peter}}, pages = {{96--111}}, publisher = {{Langenscheidt}}, title = {{{London-Diversity and Myth}}}, year = {{2007}}, }