Post this prominently on your office or classroom door to let your students know that they can trust you. You will listen to their concerns about cyberbullying and take them seriously. You will do something about the problem and get it resolved.
Hinduja, S. & Patchin, J. W. (2009). Cyberbullying trustee poster. Bullying beyond the Schoolyard: Preventing and Responding to Cyberbullying. Thousand Oaks, CA: Sage Publications. Retrieved [insert date], from https://cyberbullying.org/Cyberbullying-Trustee.pdf