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02061nam a22002897a 4500 |
| 001 |
410496 |
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210601s2020 xxg ||| |||| 00| 0 eng d |
| 020 |
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|a 1526605473 (br.) :
|c 24.30 EUR
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| 020 |
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|a 9781526605474
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| 041 |
0 |
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|a eng
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| 082 |
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|a 327.12
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| 084 |
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|a GDOC000
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| 084 |
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|a PG0100
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| 100 |
1 |
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|a Ferris, John.
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| 245 |
1 |
0 |
|a Behind the Enigma :
|b the authorised history of GCHQ, Britain's secret cyber-intelligence agency
|c John Ferris.
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| 260 |
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|a London :
|b Bloomsbury UK,
|c 2020.
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| 300 |
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|a 1 vol. (823 p. - 20 p. de plus) ;
|c 23 cm.
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| 520 |
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|a For an hundred years GCHQ - Government communications Headquarters - has been at the forefront of British secret statecraft. Famed for its codebreaking achievements at Bletchley Park against Enigma ciphers in the Second World War, GCHQ has interceped, interpreted ans disrupted the information networks of Britain's foes for a century, and yet it remains the least known and understood of British intelligence services. Based on unprecedented access to documents in GCHQ's archive, many of them hitherto classified, this is the first book to 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 conflict - become fully explicable only in the liht of secret intelligence and strategy, Behind the Enigma reveals the fascinating truth behind this most remarkable ans inscrutable of organisations.
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| 520 |
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|a You know about MI5. You know about MI6. Now uncover the story behind Britain's most secretive intelligence agency in the first-ever authorised history of GCHQ.Coming October 2020.
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| 650 |
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|a Grande-Bretagne
|b Government Communications Headquarters.
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| 650 |
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|a Servicesde renseignements
|z Grande-Bretagne
|y 20e siècle.
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| 650 |
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|a Cryptographie
|z Grande-Bretagne
|y 20e siècle.
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| 650 |
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|a Renseignement électronique
|z Grande-Bretagne
|y 20e siècle.
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| 947 |
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|a 24.30
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| 993 |
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|a Livre
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| 994 |
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|a EX
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| 997 |
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|0 410496
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