Facebook is getting into the crime-fighting game.

The social networking site helped authorities arrest 10 people behind an international botnet ring that controlled more than 11 million computers and led to losses exceeding $850 million, according to a Justice Department announcement on Tuesday.

The 10 were arrested in Bosnia and Herzegovina, Croatia, Macedonia, New Zealand, Peru, the United Kingdom and the U.S.

The Butterfly Botnet (also known as the Slenfbot) used multiple variants of the Yahos malware to infect victims' computers, particularly Facebook users who were targeted for about two years beginning in October 2010. The malware steals users' credentials, credit card and bank account information as well as other personally identifiable information. The fraudsters targeted Facebook users with spam that appeared to come from friends, which enticed them to click on a link, where the malware downloaded to their computers.

Facebook helped authorities "identify the root cause, the perpetrators, and those affected by the malware," according to press release issued by the Justice Department.

"In 2010, Facebook began investigating the Yahos malware and our automated systems were able to identify affected accounts based on suspicious activity," Facebook said in a statement on Wednesday. "Once we were able to identify affected accounts, we were able to mitigate the threats posed by these viruses. We provided free anti‐virus software to remediate impacted accounts, and our anti‐spam systems were able to block much of the malicious content.... As a result of our research, we were able to provide intelligence to law enforcement agencies about the capabilities and architecture of the malware."

The company said it had seen no new infections of the malware against Facebook users since October of this year.

The company provided a link to help users determine if their computers are infected with the malware, as well as obtain free anti-virus software to remove it from their machines.