US Players Advised To Change Password
Battle.net has been hacked, leading to "unauthorized access to some Battle.net account information." However, while a list of worldwide user email addresses was stolen, only US players apparently need to worry about changing their passwords. No credit card or billing information was accessed, don't worry. Full details below.
According to an update from Mike Morhaime, the hack essentially compromised a list of user email addresses from every region save China. However, "cryptographically scrambled versions of Battle.net passwords" were accessed for North American players, not to mention "the answer to a personal security question, and information relating to Mobile and Dial-In Authenticators.”
Blizzard believes that the incident won't put user accounts or credit cards in jeopardy, but recommends that US players change their passwords.
"This week, our security team found an unauthorised and illegal access into our internal network here at Blizzard," Morhaime elaborated. "We quickly took steps to close off this access and began working with law enforcement and security experts to investigate what happened."
“It’s important to note that at this time, Blizzard does not believe this information alone is enough to gain access to Battle.net accounts. We’ve found no evidence that financial information such as credit cards, billing addresses, or real names were compromised. Our investigation is ongoing, but so far nothing suggests that these pieces of information have been accessed."
You might want to go ahead and change your password just in case. And prepare for your email address to end up on many spam mailing lists.