Introduction: Peer violence on the Internet or electronic violence means continuous and repetitive violence in the form of inappropriate, offensive messages. These messages can be textual, visual and / or audiovisual in nature. Study design: cross-sectional study. Objective: To examine the frequency of Internet and mobile phone use among children in urban and rural areas and to show the extent of child abuse on the Internet and mobile phones. Respondents and methods: The study involved 89 students of the School of Nursig in Slavonski Brod, aged 18 to 20 years. An anonymous questionnaire was used in the survey to examine students' experiences with the use of the Internet Results: A sample of 89 respondents showed that all respondents (100 %) have access to the Internet at home and 97,8 % of respondents use the Internet daily. Although they are mostly not present when using the Internet, (73 %) parents still show interest (62,9 %) in the time spent on the Internet. The majority of respondents (97,8 %) communicate on the Internet, and 67,4 % of students spend more than two hours a day online. A certain percentage of respondents (10,1 %) claim that their secret or untrue information was published without their approval, and 4,5 % claim that someone posted their photos or videos. And, 6,7 % claim that others presented themselves on their behalf. The survey showed that a higher percentage of female respondents (29,2 %) received pornographic or sexual content on their mobile phones without wanting to. The place of residence did not show significant differences in receiving / sending harassing messages via the Internet. The majority of students (95,5 %) believe that harassment should be reported. Conclusion: Most respondents use the internet on a daily basis. Electronic violence is present in interaction with each other. Most students feel that harassment should be reported and feel that they can confide in their parents if necessary. The role of technology in today's society is greater than an individual in Croatia can imagine. Unfortunately, technology carries many dangers, and the necessary knowledge and awareness of them seems insufficient.