If you play PC games from Blizzard Entertainment such as Diablo III and World of Warcraft you need to review your account security as soon as you can.
Blizzard has confirmed a security breach compromised a large amount of user account data for Battle.net gamers. Blizzard is warning players on North American servers (including players from North America, Latin America, Australia, New Zealand, and Southeast Asia) that hackers have nabbed user e-mail addresses, answers to security questions, a database of “cryptographically scrambled” passwords, and as sensitive data related to dial-in and smartphone app-based two-factor authentication.
Source: PC World. Read full article. (link)