FBI Investigating ‘Suspicious’ Cyber Activity on System Holding Sensitive Surveillance Information

The bureau is working to determine the scope and impact of the problem, according to a notification sent to members of Congress.

The FBI said this week that it is investigating “suspicious activities” on an internal system that contains sensitive information related to surveillance operations and investigations.

The bureau is working to determine the scope and impact of the problem, according to a notification sent to members of Congress that says the unnamed culprit is using sophisticated techniques to exploit FBI network security controls.

The notification, obtained Thursday by The Associated Press, says that the FBI on Feb. 17 began investigating abnormal log information related to a system on its network.

“The affected system is unclassified and contains law enforcement sensitive information, including returns from legal process, such as pen register and trap and trace surveillance returns, and personally identifiable information pertaining to subjects of FBI investigations,” said the notification ...