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.

This book constitutes the refereed proceedings of the Second International Workshop on Autonomous Intelligent Systems: Agents and Data Mining, AIS-ADM 2007, held in St. Petersburg, Russia in June 2007.

The 17 revised full papers and six revised short papers presented together with four invited lectures cover agent and data mining, agent competition and data mining, as well as text mining, semantic Web, and agents.

This volume contains papers presented at the 3rd International Workshop on Mathematical Methods, Models and Architectures for Computer Network - curity (MMM-ACNS 2005) held in St. Petersburg, Russia, during September 25-27, 2005. The workshop was organized by the St. Petersburg Institute for Informatics and Automation of the Russian Academy of Sciences (SPIIRAS) in cooperation with Binghamton University (SUNY, USA). The 1st and the 2nd International Workshops on Mathematical Methods, Models and Architectures for Computer Network Security (MMM-ACNS 2001 and MMM-ACNS 2003), hosted by the St. Petersburg Institute for Informatics and Automation, demonstrated the keen interest of the international research community in the subject area. It was recognized that conducting a biannual series of such workshops in St. Petersburg stimulates fruitful exchanges between the di?erent schools of thought, facilitates the dissemination of new ideas and promotesthespiritofcooperationbetweenresearchersontheinternationalscale. MMM-ACNS 2005 provided an international forum for sharing original - search results and application experiences among specialists in fundamental and applied problems of computer network security. An important distinction of the workshop was its focus on mathematical aspects of information and computer network security addressing the ever-increasing demands for secure computing and highly dependable computer networks.

This volume contains the papers presented at the International Workshop on Mathematical Methods, Models and Architectures for Computer Network Se- rity(MMM-ACNS2003)heldinSt.Petersburg, Russia, duringSeptember21 23, 2003.TheworkshopwasorganizedbytheSt.PetersburgInstituteforInformatics and Automation of the Russian Academy of Sciences (SPIIRAS) in cooperation with the Russian Foundation for Basic Research (RFBR), the US Air Force - search Laboratory/Information Directorate (AFRL/IF) and the Air Force O?ce of Scienti?c Research (AFOSR), the O?ce of Naval Research International Field O?ce (USA), and Binghamton University (SUNY, USA). The ?rst international workshop of this series, MMM-ACNS2001, May 21 23, 2001, St. Petersburg, Russia, hosted by the St. Petersburg Institute for - formatics and Automation, demonstrated the keen interest of the international researchcommunityinthetheoreticalaspectsofcomputernetworkandinfor- tion security and encouraged the establishment of an on-going series of brennial workshops. MMM-ACNS2003 provided an international forum for sharing original - search results and application experiences among specialists in fundamental and applied problems of computer network security. An important distinction of the workshop was its focus on mathematical aspects of information and computer networksecurityandtheroleofmathematicalissuesincontemporaryandfuture development of models of secure computing."