This study used a random sample of youth in Taiwan to determine the prevalence of cyberbullying and the contributing factors. The results indicated that age, years in school, and time spent playing online video games were positively correlated with cyberbullying. Students with higher academic performance were less likely than others to become cyberbullies. Moreover, the results revealed a strong association between cyberbullying and on-campus bullying. Students who bullied others or were bullied in school also tended to be victims of cyberbullying. Both bullies and victims had lower levels of life satisfaction than students without such experiences. Parents are recommended to talk to their children more directly about Internet usage to mitigate the negative effects of cyberbullying on life satisfaction.