Analysis of information sources in references of the Wikipedia article "Global surveillance disclosures (1970–2013)" in English language version.
The Congressional officials were first told of the Thurmond interception by a former employee of the Lockheed Space and Missiles Corporation, Margaret Newsham, who now lives in Sunnyvale, California.
GCHQ's cover was first blown in 1976 by an article, The Eavesdroppers, published by the London magazine, Time Out.
Taken together, the revelations have brought to light a global surveillance system that cast off many of its historical restraints after the attacks of Sept. 11, 2001. Secret legal authorities empowered the NSA to sweep in the telephone, Internet and location records of whole populations.
The Congressional officials were first told of the Thurmond interception by a former employee of the Lockheed Space and Missiles Corporation, Margaret Newsham, who now lives in Sunnyvale, California.