My WoW account was hacked, and Blizzard has never been able to actually fix it. I've petitioned a couple times and they always say "clean your computer, change passwords, blah blah." Then they unban my account, and a few hours later they ban it again. It is ridiculous, it is clearly a problem on their end, I've done all the steps to protect my account. Luckily I have no desire to play WoW again, but it concerns me when I play a game like Diablo 3.