Facebook Inc., operator of the largest social network with more than 1 billion members, is working with the U.S. Federal Bureau of Investigation to probe a malware attack, people with knowledge of the matter said.
Facebook said yesterday that it was subjected to a “sophisticated attack” by hackers last month, without saying where the attack originated. Investigators haven’t found any evidence that user data was compromised, Menlo Park, California- based Facebook said on its website. The people who discussed the FBI’s involvement asked not to be identified, citing the sensitive nature of the probe.
“As soon as we discovered the presence of the malware, we remediated all infected machines, informed law enforcement, and began a significant investigation that continues to this day,” Facebook said.
Malware infected laptops used by Facebook employees when they visited a mobile developer’s website, the company said.
Facebook fell less than 1 percent to $28.32 at yesterday’s close in New York