Introduction. In the conditions of digitalization of modern society, the problem of choosing forms, methods, and means of preventing dependence on virtual reality of a computer and the related problem of cyber-victimization is acute. Especially relevant is the organization of preventive work to prevent bullying in a virtual environment starting from elementary school. The article also examines the relationship of exposure to cyberbullying, widespread among primary school students, with some personal characteristics of children.Materials and Methods. Theoretical research methods: review and critical analysis of scientific literature. Empirical research methods: testing, experiment. Methods of mathematical processing and interpretation of research results. The assessment of the susceptibility of younger schoolchildren to cyberbullying was assessed using the methodology of N. E. Shchurkova in the modification of N. P. Fetiskin (diagnosis of interactive personality orientation), the Multifactorial scale of victimization (Multidimensional Peer-Victimization Scale) H. Mynard, S. Joseph, the methodology of the multifactorial study of R. Cattell's personality (children's version).Results. The initial level of exposure to cyberbullying of children of primary school age has been revealed, the relationship between cyberbullying and personal characteristics of children has been established. A program of joint activity of the teacher and parents for the prevention of cyberbullying in primary school children in extracurricular activities has been developed. During the analysis of the results of the study of children of the experimental group, a significant decrease in the indicators of cyberbullying was revealed, which confirms the effectiveness of the developed program.Discussion and Conclusions. The implementation of the program for the prevention of cyberbullying of younger schoolchildren should be carried out in the conditions of the educational process based on the joint activity of the teacher and parents in the framework of extracurricular activities, taking into account the personal characteristics that determine the victim behavior of children.