The FBI is investigating a breach of its Digital Collection System Network, a surveillance system containing sensitive law enforcement data including pen register returns and personally identifiable information on investigation subjects. First detected February 17, the hack involved sophisticated techniques including use of commercial ISP infrastructure, a method associated with nation-state groups like China's Salt Typhoon. CISA, NSA, and the White House are also involved in the investigation. The breach coincides with heightened cyber threat concerns following U.S.-Israeli strikes on Iran, and criticism that recent mass firings of experienced FBI cyber and counterintelligence staff have created a dangerous vulnerability window in the agency's defenses.
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