by Singh, Simon.
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The billion dollar spy : a true story of Cold War espionage and betrayal
The quiet Americans : four CIA spies at the dawn of the Cold War--a tragedy in three acts
Writing on the wall : social media, the first two thousand years
Enemies : a history of the FBI
Legacy of ashes : the history of the CIA
The woman who smashed codes : a true story of love, spies, and the unlikely heroine who outwitted America's enemies
Geniuses at war : Bletchley Park, Colossus, and the dawn of the digital age
Need to know [LP] : World War II and the rise of American intelligence
A spy in plain sight : the inside story of the FBI and Robert Hanssen - America's most damaging Russian spy
Body of secrets :anatomy of the ultra-secret National Security Agency : from the Cold War through the dawn of a new century
The woman who smashed codes a true story of love, spies, and the unlikely heroine who outwitted America's enemies
English
Coding theory.
Cryptography.