FBI investigates cyber breach of surveillance network, detected Feb. 17, with unknown scope and attacker.

Wiretaps and pen register data are among the suspicious cyber activity that the FBI is looking into on a sensitive internal network used for surveillance operations. The agency has confirmed that it has identified and addressed the threat, but it has not disclosed any more information. The breach, which was discovered on February 17, targeted unclassified but law enforcement-sensitive data and used sophisticated techniques, possibly by taking advantage of a commercial internet provider. The identity of the attacker, the extent of the breach, and whether or not data was compromised have not been revealed by the bureau. The incident, which coincides with persistent threats from foreign actors, including organizations connected to China's Salt Typhoon campaign, raises questions about the FBI's cybersecurity posture in the wake of leadership changes. The inquiry is still ongoing.