In the article, based on the analysis of domestic and foreign scientific sources, the theoretical ideas about the essence of the process of personality cybersocialization, positive and negative effects of cyberspace, are systematically disseminated among modern researchers. It is established that the concept of "cybersocialization" was introduced to the scientific circulation by Russian researcher V. Pleshakov in 2005 to determine the process of qualitative changes in the structure of personality consciousness and the motivational and needy sphere of an individual, which is influenced by and resulting from the use of modern information and communication, and computer technology in the context of assimilation and reproduction of culture within the framework of personal activity. The classification of human cybersocialization factors that V. Pleshakov divides into: megafactors (cyberspace, Internet, WWW, mobile communication; macrofactors (national domain zone, social networks, Internet portals and sites, blogosphere, massively multiplayer online games); mesofactors (wiki projects and online dictionaries, Internet TV and Internet radio, IP telephony and video calls, Internet network forums, messengers, online stores, computer games); microfactors – software personal computer tech nicknames or cell phones, a personal cyberspace zone, a game character in a computer game. It is established that cybersocialization, as a systematic process, touches all sides and spheres of life of a modern person, directly influencing the formation of personality. The process is inherently ambiguous and controversial, often socially uncontrolled. Among the positive effects of cyberspace are: expanding the boundaries of communication, opportunities for non-formal education, self-realization and self-presentation, unlimited access to diverse information, organizing communities of interest, and more. Among the dangers are the focus on Internet addiction, social exclusion, virtualization of leisure and more. In particular, attention was paid to the unprotected socialization of children and young people in the context of the information society.