Cyberbullying is repeated harassment, humiliation, or intimidation carried out through digital platforms or messaging tools. It can happen in chat apps, social networks, games, forums, or email, and may include threats, doxxing, impersonation, rumor spreading, or coordinated pile-ons. Because it is persistent and searchable, the harm can follow a victim across devices and communities.
In cyber security, cyberbullying matters because it often exploits the same features defenders protect: identity, access, messaging, and moderation. Attackers may use fake accounts, stolen accounts, or anonymous groups to evade detection and pressure targets. Effective defenses include strong reporting workflows, abuse detection, rate limits, blocking tools, account verification, audit logs, and clear escalation paths for minors and vulnerable users. Good governance reduces the time abusive content stays visible and makes harmful behavior easier to investigate and stop.