Cyberbullying is a growing problem because increasing numbers of young people use computers, cell phones, and other interactive devices as their main form of social interaction. Cyberbullies use technology to harass, threaten, or humiliate their peers. Online aggression isn't just traditional bullying with new tools. It's widespread, devastating, and knows no downtime. This article looks at what schools can do to prevent cyberbullying and discusses steps toward prevention. (Contains 1 endnote.)