Blizzard, the dominant role in on-line gaming, known for World of Warcraft franchise, amongst others, announced today that they gaming servers - battle.net has been compromised, no further details are released on the matter at the moment.
[QUOTE from http://us.blizzard.com/en-us/securityupdate.html:]
Some data was illegally accessed, including a list of email addresses for global Battle.net users, outside of China. For players on North American servers (which generally includes players from North America, Latin America, Australia, New Zealand, and Southeast Asia) the answer to the personal security question, and information relating to Mobile and Dial-In Authenticators were also accessed. Based on what we currently know, this information alone is NOT enough for anyone to gain access to Battle.net accounts.
Rough estimation of total users affected: more than 12 Million.