What is the first thing you should change if you are hacked? ((FAQ'S^Immediately))
The first thing you should do when you discover that your accounts have been hacked is to change your passwords immediately 1ᅳ(844)ᅳ607ᅳ8788. Go to "Forgot password?" option to reset it immediately. Choose a strong, unique password 1ᅳ(844)ᅳ607ᅳ8788that isn't used elsewhere. Next, enable two-factor authentication (2FA) for added security.
https://support.google.com/edu..../classroom/thread/33
https://support.google.com/edu..../classroom/thread/33

What is the first thing you should change if you are hacked? ((FAQ'S^Immediately)) - Google Classroom Community

https://support.google.com/edu/classroom/thread/334000152?authuser=4&hl=en&sjid=11073396015928059621-NC
https://support.google.com/edu/classroom/thread/334000152?authuser=4&hl=en&sjid=11073396015928059621-NC