EN
Cyberbullying is a behaviour of ever increasing occurrence. Methods of cyberbullying vary, from less serious to very serious forms. The aim of the research was to find out what forms pupils in the Slovak Republic use to perpetrate cyberaggression and through what forms they are victimized. The research was conducted on a sample of 696 pupils of elementary and secondary schools, using the research tool Cyberbullying and Online Aggression Survey Instrument (2010). It was proved that the simplest form of cyberbullying is gross insults posted on the Internet and the most difficult form is creation of websites and videos to cause emotional injury.