Behind the Enigma The Authorised History of GCHQ, Britain's Secret Cyber-Intelligence Agency

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For a hundred years GCHQ Government Communications Headquarters has been at the forefront of British secret statecraft. Born out of the need to support military operations in the First World War, and fought over ever since, today it is the UK's biggest intelligence, security and cyber agency and a powerful tool of the British state. Famed primarily for its codebreaking achievements at Bletchley Park against Enigma ciphers in the Second World War, GCHQ has intercepted, interpreted and disrupted t...Vis mer