The topic of this research was the investigation of attitudes towards cyber vandalism through the establishment of gender and age differences in assessing the seriousness of cyber vandalism and the opinion differences regarding the appropriate kinds of punishment and the motives for this behavior. The sample included 200 primary and secondary students aged 12 and 17. The most important conclusions drawn from the research results are the following: 1) secondary students assess cyber vandalism less seriously than primary students; 2) male respondents assess cyber vandalism less seriously than female respondents; 3) revenge has been percieved as the most common motive for this type of behavior; 4) the criminal police registration and the prohibition of the use of internet were evaluated as the most adequate punishment for cyber vandalism.