A hacker has netted more than 2 million passwords for users of major services including Facebook, Gmail, Twitter, Yahoo, and LinkedIn, according to the security firm Trustwave. The attacker installed keylogging software on users computers in 92 countries, recording their logins and user passwords as they were typed. The companies themselves were not breached, but ADP, Facebook, LinkedIn, and Twitter have reset passwords and alerted compromised users, CNNMoney reports. The botnet controller is mainly being used to steal passwords, according to Trustwave researchers.