The 21st Annual IFIP WG 11.3 Working Conference on Data and Applications Security will take place this year from July 8-11, 2007 in the beautiful setting of Redondo Beach Marina, California, USA. The conference provides a forum for presenting original unpublished research results, practical experiences, and innovative ideas in data and applications security. The conference is limited to about forty participants so that ample time is provided for discussion and interaction. Proceedings will be published by Springer as the next volume in the Research Advances in Database and Information Systems Security series. Papers may present theory, technique, applications, or practical experience on topics of interest to IFIP WG 11.3: * Access Control * Secure transaction processing * Applied Cryptography * Secure information integration * Identity theft and countermeasures * Secure sensor monitoring * Integrity maintenance * Security assessment methodologies * Intrusion detection * Secure Semantic Web * Knowledge discovery and privacy * Secure Web Services * Organization security * Threats and vulnerabilities * Privacy * Trust management Additional topics of interest include (but are not limited to): Critical Infrastructure Protection, Cyber Terrorism, Information Warfare, Database Forensics, Electronic Commerce Security, and Digital Health Care Security. IMPORTANT DATES: Paper Submission due: March 2nd, 2007 Acceptance Notification: April 6th, 2007 Final papers due: May 4th, 2007 General Chair: Sharad Mehrotra, Computer Science Department, University of California, Irvine, U.S.A. Program Chairs: Steve Barker, King's College, London University, U.K. Gail-Joon Ahn, University of North Carolina at Charlotte, U.S.A. For further information, and to submit a paper, please visit the conference website: http://www.dcs.kcl.ac.uk/staff/steve/ifip07/index.html