This book constitutes the refereed proceedings of the 6th International Conference on
Mathematical Methods Models and Architectures for Computer Network Security MMM-ACNS 2012
held in St. Petersburg Russia in October 2012. The 14 revised full papers and 8 revised short
presentations were carefully reviewed and selected from a total of 44 submissions. The papers
are organized in topical sections on applied cryptography and security protocols access
control and information protection security policies security event and information
management instrusion prevention detection and response anti-malware techniques security
modeling and cloud security.