This book constitutes the refereed proceedings of the Second International Conference on Information Systems Security, ICISS 2006, held in Kolkata, India in December 2006.

The 20 revised full papers and 5 short papers presented together with 4 invited papers and 3 ongoing project summaries were carefully reviewed and selected from 79 submissions. The papers discuss in depth the current state of the research and practice in information systems security and are organized in topical sections on data and application security, access control, key management and security in wireless networks, threat analysis, detection and recovery, cryptography and encryption, as well as short papers and research reports.