It looks as though hackers have managed to swipe user names and passwords from some of the world’s biggest social networking and email platforms… again. Per CNN, security firm Trustwave claims that hackers have stolen more than 2 million Facebook, Google, Twitter and Yahoo user names and passwords through malicious keylogging software that’s been installed in an unknown number of computers. Facebook users have been the biggest victims of the malware so far, as an estimated 318,000 Facebook accounts have been compromised so far along with 70,000 Google-related accounts, 60,000 Yahoo accounts and 22,000 Twitter accounts. Trustwave says that it’s notified all affected companies about the security breach.