Purpose of the article: optimization of the choice of information security tools in a multi-level automated system, taking into account higher levels, quality indicators of information security tools, as well as the general financial budget. Demonstration of analogies of solving these problems with known problems from communication theory. Research method: optimal choice of information security tools based on risk analysis and the Lagrange multiplier method; Optimal bit budget allocation based on the Waterfilling optimization algorithm. Optimal placement of information security tools in a multilevel automated system based on bisectional search. Obtained result: the article shows analogies between some problems of communication theory and the optimal choice of information security tools. The well-known problem of the optimal choice of information security tools is solved using the rate-distortion theory, the well-known problem of the optimal budget allocation for their purchase is solved by analogy with the problem of distributing the power of transmitters. For the first time, the problem posed for the optimal placement of information security tools in a multilevel automated system was solved by analogy with the problem of distributing the total bit budget between quantizers.
Rate-Distortion Theory for General Sets and Measures
