''Behind the Enigma: The Authorised History of GCHQ, Britain's Secret Cyber-Intelligence Agency ''is an authorised history of

GCHQ Government Communications Headquarters (GCHQ) is an intelligence and security organisation responsible for providing signals intelligence (SIGINT) and information assurance (IA) to the government and armed forces of the United Kingdom. Primar ...

, written by intelligence and security expert John Ferris. It was published on 20 October 2020 by

Bloomsbury Publishing Bloomsbury Publishing plc is a British worldwide publishing house of fiction and non-fiction. Bloomsbury's head office is located on Bedford Square in Bloomsbury, an area of the London Borough of Camden. It has a US publishing office located in ...

Reception

Lawrence D. Freedman, reviewing from ''

Foreign Affairs ''Foreign Affairs'' is an American magazine of international relations and foreign policy of the United States, U.S. foreign policy published by the Council on Foreign Relations, a nonprofit organization, nonprofit, nonpartisan, membership or ...

'', commented that the book's judgement on

Bletchley Park Bletchley Park is an English country house and Bletchley Park estate, estate in Bletchley, Milton Keynes (Buckinghamshire), that became the principal centre of Allies of World War II, Allied World War II cryptography, code-breaking during the S ...

's influence was "careful". However, the book's engagement was critiqued by ''

The Guardian ''The Guardian'' is a British daily newspaper. It was founded in Manchester in 1821 as ''The Manchester Guardian'' and changed its name in 1959, followed by a move to London. Along with its sister paper, ''The Guardian Weekly'', ''The Guardi ...

'', which described it as "deeply technical in places and largely lacking in colour or human drama", despite praising the coverage of intelligence during the

Falklands War The Falklands War () was a ten-week undeclared war between Argentina and the United Kingdom in 1982 over two British Overseas Territories, British dependent territories in the South Atlantic: the Falkland Islands and Falkland Islands Dependenci ...

. The book was also reviewed by ''

The Times ''The Times'' is a British Newspaper#Daily, daily Newspaper#National, national newspaper based in London. It began in 1785 under the title ''The Daily Universal Register'', adopting its modern name on 1 January 1788. ''The Times'' and its si ...

'' and ''

Cryptologia ''Cryptologia'' is a journal in cryptography published six times per year since January 1977. Its remit is all aspects of cryptography, with a special emphasis on historical aspects of the subject. The founding editors were Brian J. Winkel, Davi ...

''.

References

2020 non-fiction books English non-fiction books English-language non-fiction books Bloomsbury Publishing books {{UK-book-stub