So ill start from beginning.
Sometime 2-3 months ago i got my hands on an account of some person.
Soon enough the person got account back with help of blizzard and changed email back (i managed to get secret question answer and change email)
Until now i did not care about the account, but then in my email a letter was waiting to be opened.
Inside i found:
A request for a new password for your World of Warcraft Account has been received. Your new temporary password is: ********
If you wish to change this password, please visit World of Warcraft Europe , log in with your account name and password.
When logged, click on the "Change Password" link.
Thank you for contacting Blizzard Entertainment Europe!
Now loggin to the wow account it tells me email is the original owners.
Why did blizzard send me the email? I only changed to my email once.
Also this happened on another account, what i changed email a few times to test something.
In the end blizzard reversed to one of my 3 emails and told my account had been compromised and changed password, also restored all gold I had scammed and sold.