I. Introduction
Modern society entirely depends on information-communication systems and networks, the failure of which, can lead to chaos, significant financial losses and even mass deaths of people. However, the majority of humanity tends to take the most important services (in particular, their quality) as a matter, until something or somebody disturbs their work. To determine and generalize the most important and most vulnerable of state assets, relatively recently, the term critical infrastructure (CI) [1] was introduced into international law. Typically, this category relates to energy and transmission line, oil and gas line, seaports, high-speed and government communications channels, life-saving systems of megacities, high-tech enterprises and enterprises of the military-industrial complex, and also the central government authority. Recently, the issue of the objects and protection the safety of CI in general (at the state and international levels) became relevant.