Abstract: The subject of the study is the analysis of the dynamics of social security legislation in modern Russia, the development and reliability of which directly affects the internal stability and national security in the country. The author examines in detail the issue of increasing the role of the subjects of the Russian Federation in the social security of citizens on the example of recent events that have affected social stability within the country, such as the coronavirus infection and the conduct of a special military operation. The choice of subjects to whom social security is directed depends not only on subjective factors (low-income, disability, marital status, many children), but also on the geopolitical, economic situation and other factors. At the same time, the author assesses the trend of regionalization, given that social security is under the joint jurisdiction of the Russian Federation and its regions. The author has identified the tendency of regionalization of social security legislation, which has positive and negative sides, reflecting on the level of social security of citizens. The author concluded that there should not be extremes in the form of passive adaptation of the regions or, on the contrary, their exclusive initiative in the social security of citizens. The initiative and participation of the subjects of the Russia today are key, while we should not forget about subjective factors (the speed of managerial decision-making, the quality of work of the system of authorities of the regions, the presence of necessary structures/organizations in it), taking into account which it is necessary to build a system of productive interaction, where the state assumes the main role. It is this approach to the legal regulation of social security of citizens that can ensure social security and preserve stability and security within the country.