To the question of choosing a defense strategy communication systems for special purposes in case of information security threats

Abstract: The challenges of modern information security threats that have a destabilizing effect on special purpose communication systems (SSSN) require a response. At the same time, counteraction in the SSSN is considered as a complex, multilevel hierarchical process, and the information conflict is considered as a way of interaction between the components of the system, the result of which is not predetermined in advance. As a result, it is possible to implement various strategies for protecting information systems based on possible options for action. When analyzing the information conflict in the SSSN, the models of conflicts based on control theory, game theory, and the probabilistic-temporal approach are considered. On the basis of the principle of direct modeling of the conflict process, a model of conflict interaction "СССН-intruder" is proposed. The proposed model of the conflict "СССН-intruder" at the conceptual level is structurally presented in the form of a system with two control loops, having a common object of influence СССН and directly opposite goals of functioning, and the dynamics of their interaction is presented in the form of a scheme "impact-response" with the possibility of making a decision on the application of measures to counter conflict impact both after the fact of impact, and after establishing the fact of active scanning of vulnerabilities. The counteraction strategy in this case involves the use of the available resource, according to a certain algorithm, for the response of the system to the impact. It is shown that the choice of the countermeasures strategy, as well as the conflict interaction itself, depends on the operating conditions and parameters of the SCCH. As a result of modeling, it was shown that the conflict interaction over the entire time interval is cyclical, i.e. there is a predominance of the conflict impact or the strategy of counteraction to the conflict impact, at each step of the conflicting interaction of the parties.

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