Ensuring national security and defense in modern conditions and in the future requires an effective national cybersecurity system. The basis for the formation of a national cybersecurity system is a comprehensive and systematic approach to the availability and effective implementation of all necessary organizational and technical measures to ensure cybersecurity. The report considers the crisis situations which emerge as a result of the information and cyber activities of a hybrid character. It also highlights the indices and indicators of the information hybrid effects through cyberspace. On the basis of analyzing the information activity in cyberspace the author proposes a theoretically substantiated and experimentally proved composition related to the system of early detection of the information hybrid effects. It is shown that the localization and elimination of a specific critical situation require the situational structural and parametric synthesis of the complex distributive information system of management and situational control. The situational center proves to be its basic element. The report also dwells on the functions, standard and variable sets of software and hardware complexes of specialized automated working places. The practical application of software and hardware complexes for the automated realization of the process of monitoring, the analysis of activity in cyberspace prove the possibility of ensuring early detection of information hybrid threats and effects.