Friend being hacked as i write this.

Q u o t e:
Dreanor Server. Names Karvin and GALLIHAD. I put a ticket in but wanted to know if there is a faster way to block him. He has already wiped out 24k of gold and most of the guild bank items

Thank you for the report, Windchill. While it's virtually impossible to catch these guys fast enough to prevent any damages - I'm quite certain you've ruined someone's day :)

mwhaha, I mean *cough*, *cough*

If you have a way to contact this player, please ask them to check their registered email for further instructions.

You might also direct them to these stickies, they may prove helpful.

Account Hacked? Security Issue? Look Here!
http://forums.worldofwarcraft.com/thread.html?topicId=24702231244

Blizzard Store
http://us.blizzard.com/store/browse.xml?f=c:6

Mobile Authenticator
http://us.blizzard.com/support/article.xml?locale=en_US&articleId=26109

Q u o t e:
the hacker put an authenticator on his account so he can't change the password. Thats a new one

No, actually that's pretty common. He should have a new password on the way.