FBI investigating 'suspicious' cyber activity on system holding sensitive surveillance information

The FBI is investigating “suspicious activities” on an internal system that the bureau says contains sensitive information related to surveillance operations and investigations. The bureau is working to determine the scope and impact of the problem. That's 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 February 17 began investigating abnormal log information related to a system on its network.