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		Ferris, John Robert, 1956-

	Subjects
		Great Britain. Government Communications Headquarters -- History.
		Intelligence service -- Great Britain -- History -- 20th century.
		Radio in espionage -- Great Britain.
		Electronic intelligence -- Great Britain -- History.
		Cryptography -- Great Britain -- History.

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		Ferris, John Robert, 1956-

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		Behind the enigma : ...

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		327.1241 F394b

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		Ferris, John Robert, 1956-
		Great Britain. Government Communications Headquarters -- History.
		Intelligence service -- Great Britain -- History -- 20th century.
		Radio in espionage -- Great Britain.
		Electronic intelligence -- Great Britain -- History.
		Cryptography -- Great Britain -- History.


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Behind the enigma : the authorised history of GCHQ, Britain's secret cyber-intelligence agency / John Ferris.

by Ferris, John Robert, 1956-

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Great Britain. Government Communications Headquarters -- History.

Intelligence service -- Great Britain -- History -- 20th century.

Radio in espionage -- Great Britain.

Electronic intelligence -- Great Britain -- History.

Cryptography -- Great Britain -- History.

9781635574654 (hc.)

xiii, 823 p. : ill., maps ; 24 cm.

Includes bibliographical references and index.

Introduction -- The origins of modern British Sigint, 1844-1914 -- Britain and the birth of Signals Intelligence, 1914-18 -- Whitehall's Black Chamber : British cryptology and the Government Code & Cypher School, 1919-39 -- Cryptoanalysis and British foreign policy, 1919-39 -- Bletchley -- Ultra and the Second World War, 1939-45 -- Cheltenham : GCHQ, Britain and Whitehall, 1945-92 -- UKUSA and the international politics of Sigint, 1941-92 -- 'We want to be Chetlonians': the Department -- Just who are these guys, anyway? A historical-sociological analysis of GCHQ, 1939-89 -- Intercept to end product : the collection, processing and dissemination of Sigint, 1945-92 -- GCHQ vs the Main Enemy : Signals Intelligence and the Cold War, 1945-92 -- Comint and the End of Empire, 1945-82 : Palestine, Konfrontasi and the Falkland Islands -- Secrecy, translucency and oversight, 1830-2019 -- GCHQ and the Second Age of Sigint, 1990-2020 -- Conclusion.

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 the information networks of Britain's foes for a century, and yet it remains the least known and understood of British intelligence services. It has been one of the most open-minded, too- GCHQ has always demanded a diversity of intellectual firepower, finding it in places which strike us as ground-breaking today, and allying it to the efforts of ordinary men and women to achieve extraordinary insights in war, diplomacy and peace. GCHQ shapes British decision-making more than any other intelligence organisation and, along with its partners in the Five Eyes intelligence partnership, has become ever more crucial in an age governed by information technology. Based on unprecedented access to documents in GCHQ's archive, many of them hitherto classified, this is the first book to authoritatively explain the entire history of one of the world's most potent intelligence agencies. Many of the major international episodes of the last century including the retreat from empire, the Cold War and the Falklands become fully explicable only in the light of the secret intelligence record. Written by one of the world's leading experts in intelligence and strategy, Behind the Enigma reveals the fascinating truth behind this most remarkable and enigmatic of organisations.

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