I think I authorized a computer to sign into my google account... how do I unlink this device???

[AC Question]

This computer that i gave permission to use my account keeps hacking my google account... how can I remove it??

 

[Tim1954]

Change your password while you still can...

 

[hallux]

Go to myaccount.google.com and de-authorize it. This is done in the Sign in & Security section, find the Device activity & notifications link. If you've given a computer access to your account, it's technically not hacking your account.

I suggest setting up 2-factor authentication. I need to do this for my mom, she keeps getting notifications that someone is trying to log in to her account but Google blocked them.