To all my fellow World of Warcraft players. Mike Morhaine has stated this evening that players outside of China are required to change both their passwords and their security questions after some encrypted passwords and other possible security information have been stolen from the Blizzard databases. If your account is on the North America servers, Mobile and Dial-In Authenticator information has also been accessed. The security team found an ‘unauthorised and illegal access’ into the internal network at the company. Blizzard are also working with law enforcement and security experts to investigate what exactly happened.
We are being told that it’s nothing to worry about and that they are already fixing the problem. At this point in time, there’s no evidence to point that any credit cards, billing addresses or real names have been compromised. But it’s better to change your passwords etc. just to be on the safe side. Remember, Blizzard will never ask you for your password via an email or an in-game IM. Keep your eyes peeled for any possible attempts at phishing your account too.
The whole situation is detailed here, and hopefully updates on the situation will also be posted there too.
Good luck fellow fighters of Azeroth!