Yesterday, there was a relatively major breach in the Battle.net security system. Blizzard reported some information has been stolen, but claims there is no evidence accounts or credit cards are at risk.
Studio President Mike Morhaime issued a statement about the security hiccup on the official Blizzard website. He does not think any of the stolen data and information will allow any one to gain access to other user’s accounts or credit cards. He does however recommend Battle.net users change their security questions.
The stolen information includes email addresses for users outside of China, and answers to personal security questions and information relating to mobile and dial-in Battle.net authenticators. This could potentially affect anyone using the service, including the large communities currently playing Starcraft II, Diablo 3, and WoW.
This attack kind of resembles the large Playstation Network security failure in mid-2011. Hopefully Blizzard takes a little less time to deal with these issues that Sony did.