Increasing of Information Systems Security by Methods of System Analysis

A systematic analysis of the information security problem is carried out in order to ensure the security of the protected object during the period of its operation. The information security system is considered as a problem containing system. To improve intervention in a problematic situation based on the method of decomposition of system analysis and the requirements of a structured description of the protection environment, a model of the composition of the protected object and a model of the essential environment that takes into account the specificity of targeted threats are proposed. Aspects of ensuring information security both at the level of information infrastructure are investigated.