An anonymous reader writes "WoW.com is reporting that a trusted source has informed them that Blizzard is giving serious consideration to making authenticators mandatory on all World of Warcraft accounts. The authenticators function the same as ones provided by most banks — in order to log in, you must generate a number on the external device. Blizzard already provides a free iPhone app that functions as an authenticator. The source stated, 'it is a virtually forgone conclusion that it will happen.' This comes after large spates of compromised accounts left Bizzard game masters severely backlogged by restoration requests."