Розробка методики інтелектуального управління параметрами захищеності інформаційних систем

The object of the study is information systems (IS). The problem that is being solved in the study is an increase in the level of IS protection. The study developed a methodology for intelligent management of IS security parameters. The originality of the study consists of: – conducting a multi-level and systematic assessment of the state of IS security using the proposed set of analytical expressions; – determining the influence of IS security parameters on each other when the IS security state changes due to the use of fuzzy analytical expressions; – construction of multidimensional dependencies of the security state of the special-purpose IS, which evaluates the security of the IS based on an arbitrary number of parameters; – assessment of IS security in conditions of incompleteness of information about evaluation parameters, which solves the dimensionality problem; – construction of time dependences of changes in parameters that characterize the state of IS protection, which allows determining the moments of deviation of their values from the nominal; – reducing the error of assessing the state of IS security due to the human factor through the verification of IS parameters; – attracting additional computing resources (if necessary), which achieves the prevention of looping of the methodology; – determination of the influence of control decisions on a separately defined parameter for assessing the state of IS security, which achieves an increase in the accuracy of control influences. Modeling of the work of the proposed methodology was carried out, during which it was established that increasing the security of the IS is achieved by increasing the efficiency of decision-making at the level of 12−16% due to the use of additional procedures and ensuring the reliability (correctness) of the decisions made at the level of 0.94. This allows to avoid distortions and distortions of the information provided for decision-makers (systems)