You know it's getting serious when a company employs the same security as financial institutions when logging into accounts. Blizzard allows you that extra layer of security with their very own key fob and
here are some instructions on how to get it attached to your account. It costs $6.50 but you can
download one for your mobile phone for .99 cents.
All this is optional of course but if I were grinding my butt off every day in
World of Warcraft and spend hundreds of dollars in subscription fees, I guess I would use it as well just for peace of mind. With
Diablo III and
StarCraft II, I might just use one of these little things to help prevent my account from being hacked.