This article analyzes the evolution of the role of cyberspace in Russian strategic thought, with a particular focus on the concept of information security. In contrast to Western definitions of cybersecurity, which primarily concentrate on the protection of technical infrastructure, the Russian approach—as expressed, inter alia, in the 2016 Information Security Doctrine—integrates technical aspects with information- psychological ones. The author posits that for the Russian Federation, cyberspace is a key domain in the struggle for state sovereignty and a tool for countering threats to constitutional and cultural stability. The paper discusses legislative processes, such as the „sovereign internet” law, and methods of utilizing digital technologies to conduct hybrid operations. The conducted analysis demonstrates that the Russian perception of cyberspace is embedded in the information warfare paradigm, which necessitates a drive toward technological autarky and the systematic tightening of control over the national flow of data.