Sounds like phasing. If your account isn't banned, the email is fake and likely sends you so a site that looks like the loging site of WoW, but instead it's a copied site which would store the login details should you attempt to log in there.

And when you do, THEN your account will be hacked.



Besides there's a spelling mistake in the email sent to you. Smells baaaaaaad. (If you did click the link, quickly change your account passwords (pref from a diff comp you sure isnt infected with any bad shit)