I logged in today fresh after reset only to have the horrible realisation that my toons were wearing gear that I did not log them out in. They were all separated and standing outside mailboxes. Sure enough Gold was reduced to silver, all gear except undisenchantable stuff was stripped, badges, honour and arena points were 0...

My quandry is that I switched to Battle.net on the weekend. Other than that I had hardly been near a computer let alone played them since then. They have all gotten the Mr Penguin pet and login screen has changed to battle.net so it was all obviously legit. I can't help but think that if I hadn't had to do this however, my accounts would still be secure, or at worst only 1 of them would have been compromised let alone all 5...

Have put in a GM ticket. Will look more into any other action that needs to be taken, but would aprpeciate any advice from others that have been hacked.