Every year, WOSIS gather researchers and practitioners of Information Systems Security and gives them the opportunity to present the most recent advances in theory and practice in security for Information Systems, as well as the risks related to simplistic developments of security for information systems. The Fourth International Workshop on Security in Information Systems received 54 submissions. All of them were reviewed by at least three program committee members or other experts at their organizations which acted as additional reviewers. Finally 25 papers were accepted; unfortunately, some excellent papers had to be rejected because they did not correspond to WOSIS’06 scope. The Workshop is primarily interested in high quality, innovative and unpublished research. In this edition, a selection of the best works was done in order to include extended and revised versions of these papers in the prestigious Internet Research Journal. We especially want to thank to Dr. David
Schwartz for his outstanding support throughout the whole process. In this edition, Dr. Leonardo Chiariglione has honored us with his great experience offering the keynote speech of WOSIS 2006. We want to acknowledge his contribution and amiability. This fact has increased the quality of the technical program which we hope you find motivating. It is also our pleasure to thank the members of the program committee and the additional reviewers for the work well-done. We also want to give our sincerest thanks to the members of the organisation committee for their hard work and support. We gratefully acknowledge all the authors who submitted papers to WOSIS’06 for their efforts and we hope to receive new contributions for future editions of WOSIS. To conclude, on behalf of the Organizing Committee we sincerely hope that you enjoy not only the workshop technical program, but also the beautiful and relaxing scenery of Paphos.
Vol. 1 - 978-972-8865-52-8