Puzzle Palace, published 1982: https://www.amazon.com/Puzzle-Palace-National-Intelligence-O...
This guy made a career out of documenting the inner workings of the NSA and what they get up to. It wasn't common knowledge, but it's been known what they get up to, and proof thereof, for decades.
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Puzzle Palace, published 1982: https://www.amazon.com/Puzzle-Palace-National-Intelligence-O...
This guy made a career out of documenting the inner workings of the NSA and what they get up to. It wasn't common knowledge, but it's been known what they get up to, and proof thereof, for decades.