Cyber bullying is an emerging form of peer bullying, becoming prominent especially over the past decade. The aim of this study was to investigate through interviews the perceptions of Turkish high school students about cyber bullying. The sample consisted of six male and one female high school students all aged 15 years who identified as being active in cyber bullying. Findings were grouped under four main headings; acts of cyber bullying, reasons for cyber bullying, characteristics of cyber bullies and victims, and suggestions to prevent cyber bullying. The results were discussed in the light of relevant literature.