If a machine logs in to your account from a new 'client' the user should get an email immediately. In this e-mail you say a new machine logged into your account, if this is not you, then go to the website, change your password and unlink that machine that is not yours.
If a machine logs in to your account from a new 'client' the user should get an email immediately. In this e-mail you say a new machine logged into your account, if this is not you, then go to the website, change your password and unlink that machine that is not yours.