NEW YORK (CNN) – Officials from various social networking sites say hackers have been able to steal information from nearly two million users.
According to Trustwave, the data breach was caused by the hackers installing keylogging software on computers around the world.
The virus was able to capture log-in credentials for Facebook, Twitter, Yahoo and Google accounts.
Authorities say the software routed information through a proxy server, which means it is virtually impossible to figure out which computers are infected.
On Nov. 24, Trustwave tracked the server that was storing all the stolen information to the Netherlands.
The following companies were compromised:
- 318,000 Facebook accounts
- 70,000 Gmail, Google+ and YouTube accounts
- 60,000 Yahoo accounts
- 22,000 Twitter accounts
- 9,000 Odnoklassniki accounts
- 8,000 ADP accounts
- 8,000 LinkedIn accounts
According to CNNMoney, ADP, Facebook, LinkedIn and Twitter notified and reset passwords for compromised users.
Experts say that users may not even know if their computer is infected and the hacking operation may still be ongoing.