When the slim 360's came out, I traded in my white 20gb model without the hard drive. I assumed that all profile/gamertag information was on the hard drive.
Fast forward to today and I see that someone logged into my account, spent my points, played a game, changed the avatar, etc.
I was not the victim of any social engineering, etc. The only thing I can think of is that my old console allowed the purchaser to log into my XBL account, even though I still have my original hard drive.
Is this possible?
Best Answer
So, a gamer tag can only be associated with 1 memory device at a time.
If you transfer to another hard drive, or memory unit, or recover it to a new Xbox, the old gamer tag will be unable to log into Xbox live.
There is a single exception to this rule. If you duplicate the profile (which would require custom modifications and void your warranty), then the first profile to log in will become the main one, and the other will not work.
Regardless, you should not be able to log in, if someone else is able to. If you're finding that is the case, I would recommend you contact Xbox directly about this issue.