Taking into account the tendencies of democratization and informatization of all sectors of the economy and spheres of public administration, and, accordingly, the increase in information risks, the vast majority of countries in the world today go through a series of stages of ensuring information security. Despite the legislatively established powers of the relevant state authorities and local self-government in this area, the issues of defining their competence and effective interaction are real and effective guarantees of preventing a variety of information threats to national security as in this case effective and timely ways of eliminating existing dangers are provided. Given that large-scale invasions and hybrid wars can cause catastrophic harm and undermine public confidence in the government, the state must make quick decisions. Consequently, establishing an effective mechanism for ensuring information security has become more relevant than ever nowadays. The purpose of the academic paper is to clarify the theoretical fundamentals, as well as the components, directions and other critical practical aspects of the process of ensuring the state’s information security under conditions of hybrid warfare. Methodology. In the course of the research, abstraction, idealization, system-structural, comparative, logical-linguistic methods, analysis, synthesis, induction, deduction were used to process scientific information on issues of the state’s information security. Results. Based on the research results, the features of the process of ensuring the state’s information security in a hybrid war were studied and certain practical aspects of this issue were clarified.