Hacked and confused...

So I was hacked last Thursday, and this is my problem... I don't get it. Okay, so a lot of people say that, I'm sure. But the thing is; I never answered any emails to phish of me. I used Norton 360, Spybot Search and Destroy, and even Malwarebytes, and not a single one of them found anything at all.

Whomever it was hacked my email account and used it to reset my WoW password and hacked me. Heck, when I realized it and changed the password... As I was filing my problems in-game they changed the password again, proving they did in fact have my email password, and only attacked my WoW account.

Now I have everything sent back to me, thank you Blizzard, but I'm at a complete loss as to how this happened. I have an authenticator on it now, thanks to my iPhone, but I just don't get how this occured at all.

I never went to any weird websites or anything. The only thing I can figure is that maybe one of my add-ons had a keylogger in it that only runs while WoW is running, because this didn't happen until I logged into gMail with WoW reduced. But I get all my add-on's from the Curse client.

So again, totally confused here. Any help would be appreciated, thank you!