Apparently sick of dealing with hacked accounts, Blizzard adds two-factor authentication. The future of MMO security?

Blizzard Authenticator passcode token adds anti-theft enchantment to your World of Warcraft account - Engadget

Fear not, vulnerable World of Warcraft denizens, for Blizzard is here to sell you the $6.50 "Blizzard Authenticator" dongle. Reacting to an upswing in account theft incidents, Blizzard has released a security token that allows hardcore users to add another layer of protection to their high-level (and attractive) characters.