The final paper deals with peer electronic violence of adolescents. Peer-to-peer electronic violence is characteristic of adolescents, and the aforementioned has its basis in the increasing spread of social networks and platforms for communication. Given that awareness of this negative social phenomenon has only been raised in recent years and significant research has been conducted, the paper lists all the characteristics of peer violence, electronic violence, as well as the types and characteristics of the participants in the violence. In order to show the exposure and forms of electronic peer violence among adolescents on social networks in the Republic of Croatia, a questionnaire was conducted with 220 Croatian adolescents. At the same time, in order to collect richer data on the problem of electronic violence, an in-depth interview was conducted with an adolescent who experienced this form of violence in the past. In addition to the results of the research confirming the topicality and relevance of the topic of peer violence, they also showed that a third of the surveyed adolescents encounter or have encountered electronic violence, mostly in terms of inappropriate or threatening messages, i.e. intentional isolation. The results also pointed to the fact that adolescents believe that they are not sufficiently protected in this regard, and that the victims are most often those who are "unpopular" in peer group.