What is a troll?

A troll is an individual who uses telecommunications to annoy, harass, or intimidate someone maliciously or to incite fear.

Cyberbullying can be…

Spreading lies on social media

Maliciously destroying someone's online reputation

Making threatening remarks or sending repeated messages to annoy someone

First reflex: the warning link!

By sending a warning, you send a clear message that you do not accept the behavior of the cyberbully and that you might decide to take further actions that could result in more severe consequences for them.