Announced in this thread here:
WoW Forums -> Announcing the new Blizzard Authenticator!
Blizzard has implemented a new tool called the Blizzard Authenticator. It's basically a little tool that you put on your keyring that adds an extra layer of security when logging into WoW or the Account Management page.
You can read more about it in their article on it here: http://us.blizzard.com/support/artic...rticleId=24660
I don't think it's on their store page yet, but it should be soon.
Take this as you will, folks. This may change scamming somewhat, though I am not yet certain.