For months, hackers--most likely in China and Russia, according to security watchers--have been surreptitiously installing keylogging software on WoW players' Windows computers, hijacking their accounts and selling off their often valuable in-game assets.
And the problem doesn't show any signs of going away.

The gangs perpetrating the hacking are "incredibly active, and it's a good exploit," said Roger Thompson, CTO of security software developer Exploit Prevention Labs. "It's probably a conservative estimate to say that there's tens of thousands of victims."