Originally Posted by
Obnoxious
Access to the email account is required for that. If you compromise both your Warmane and Gmail account at once shouldn't be something we have to cover you for.
If they are entering both a correct username and password, it's because they already had figured the pair out. The attempted access should be a warning for the owner to change their credentials (even more so if the same are used in other services, what way too many people do, and which likely leads to many of the stolen accounts here).
You're correct, though, that every system has a weak point, and it's shared across all of them: the user being negligent.