The monograph examines the features of legal relations in the field of information security in the global information space. The concept of "cybersecurity" is investigated, the institutional independence of the norms of law on ensuring security in the cyber environment is substantiated from the point of view of the subject and method of legal regulation. Considerable attention is paid to the characteristics of the sources of law on ensuring information security on the Internet. Substantial proposals have been made to improve legal regulation in this area both at the national (primarily Russian) and international levels. A technological approach has been applied to the consideration of security issues in the global information space, within the framework of which the organizational, technical and legal principles of ensuring information security in cyberspace, as well as ways and means of ensuring security in the global information space have been studied. It is given not only an assessment of the level of use of funds, their interrelation and mutual complement, but also the legal characteristics of security tools in the global information space, for example cryptographic. The resources allocated for the implementation of the type of legal technology under study that were not previously allocated in the legal literature, for example, scientific and economic. The features of the protection of personal information on the Internet are considered, as well as modern problems of legal security in the global information environment, including cybersecurity in banking, healthcare, and biometric data security. The problems of international cooperation in the field of information security are highlighted. For a wide range of readers interested in information security issues. It can be useful for students, postgraduates and teachers of law schools and faculties.