This book constitutes the refereed proceedings of the 10th IFIP TC-6 TC-11 International Conference on Communications and Multimedia Security, CMS 2006, held in Heraklion, Crete, Greece in October 2006.

The 22 revised full papers presented were carefully reviewed and selected from 76 submissions. The papers are organized in topical sections on applied network and information security, identification and authentication, DRM and multimedia security, Web and XML security, cryptography, privacy and data protection, as well as network and information security analysis and modeling.