A law firm specializing in consumer protection cases slapped Blizzard, the makers of World of Warcraft, StarCraft and Diablo III, with a class action lawsuit over its sale of two-factor account authenticators, a claim the company says is without merit.
Yes, you can get a completely free Battle.Net account authenticator through the use of a smartphone app, which Blizzard makes available for iOS, Android and Windows Phone. If you don't have a smartphone, you can purchase a keychain authenticator for $6.50. If you don't have a smartphone and don't want to pay money, you better use a unique password. Battle.Net was hacked back in August, exposing the email addresses of those on Blizzard's North American servers.