How Mark Klein’s Revelation About Room 641A Exposed NSA’s Overreach
*By James Eliot, Markets & Finance Editor* *Last updated: May 01, 2026* # How Mark Klein’s Revelation About Room 641A Exposed NSA’s Overreach In a startling disclosure, former AT&T technician Mark Klein revealed that the clandestine Room 641A facility intercepted an estimated 25% of all telecommunications in the United States. This level of surveillance raises … Read more