Malware is a type of bad software. It sneaks onto your phone, tablet or computer without you knowing. It can spy on what you do, steal your passwords, or break your device.
You might get malware by clicking on something in a message or game, or by downloading an app or file that is not safe.
Look out for these things. They might mean malware is on your device:
If you see any of these things, tell an adult you trust straight away.
Also remember:
Everyone makes mistakes. What matters is telling the truth and asking for help early.
Malware can sneak in quietly. It is not your fault. But if you say something early, it can be fixed.