Stop reading this and change your password/s! Steam forums were previously hacked on November 6th but it looks like now that the hackers have gotten more than just forum information and have gotten into the steam database. Check out this official statement from Gabe Newell and if you haven't changed your password do it already. Be back with gaming news shortly. If you want to see the img better follow link.
Link: http://i.imgur.com/EcEUJ.png