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The structural composition of modern information security systems is characterized by complexity and multiplicity. Deviation from the established norms, decrease in the efficiency of any element lead to a violation of the nominal operational state of the entire system. In this work, the evaluation of the effectiveness of information security system is considered as a task of synthesis of multidimensional solutions using multiple data. Through the example of information security systems the approach of system analysis of complex systems operation is considered, based on the functional structure decomposition and the basic subsystems division into elementary blocks. A method based on the basic rules building using interval parameters is proposed. The synthesis and nonlinear model use for evaluating the effectiveness of a complex information system are proposed. For digitizing of uncertainties, initial errors, measurement inaccuracies and duality in expert estimates, the interval form that replaces data elements is used. For the study of subsystems functioning, effect level and contribution to the entire system efficiency, system analysis of accuracy of each considered element evaluation was conducted. It has been demonstrated that based on obtained estimations and analysis it becomes possible to create guidance documents and development strategies for the entire information system and the evolution of its subsystems. The cascade method of hierarchy analysis is proposed, reducing by several times the subjective influence of experts and decision makers in employed criteria ranking, which improves quality of effectiveness evaluation for both individual subsystems and the information security system as a whole.

Key words: synthesis, decomposition, information security system, interval estimates, efficiency, effectiveness evaluation, cascade method of hierarchy analysis
Published in: INFORMATION-COMMUNICATION TECHNOLOGIES
Bibliography link: Lubentsov A. V. Synthesis of a method for evaluating the effectiveness of an information security system. Proc. Univ. Electronics, 2024, vol. 29, no. 1, pp. 118–129. https://doi.org/10.24151/1561-5405-2024-29-1-118-129

Alexander V. Lubentsov
Voronezh Institute of the Federal Penitentiary Service of Russia (Russia, 394072, Voronezh, Irkutskaya st., 1A)

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Publication type: Scientific article
DOI: 10.24151/1561-5405-2024-29-1-118-129
RISC id: UJNZBJ

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