The 37 revised full papers presented were carefully reviewed and selected from 168 submissions. The papers are organized in topical sections on Intrusion Detection and Network Vulnerability Analysis; Network Security; Smart Cards and Identity management; Data and Applications Security; Privacy Enhancing Technologies; Anonymity and RFID Privacy; Access Control and Trust Negotiation; Information Flow and Non-transferability; Secure Electronic Voting and Web Applications Security; VoIP Security, Malware, and DRM; Formal Models and Cryptographic Protocols; Language-based and Hardware Security.