Let your child know that they can always come to you if anyone upsets them online, and provide immediate reassurance that they have done the right thing by telling you. Encourage your child never to retaliate if someone online starts to say or do unkind things; use the reporting/blocking tools available on games/apps/websites to prevent further content coming through; and take screenshots so that evidence is saved. This is where having your own accounts may be advantageous as you’ll be familiar with the user protection that is available. Acting quickly will also help to contain the situation from getting any worse.
Our How to make a report page, Cyberbullying and Digital Wellbeing hot topics can provide further information.