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Visit this site: http://www.gchq.gov.uk/

Author:Government Communications Headquarters, United Kingdom
Description: British intelligence: take a brief, illustrated tour of GCHQ history through World War I, World War II and cracking the German Enigma code, the Cold War, and the post Cold War world; read about career opportunities for mathematicians and others; apply for a position; and take the GCHQ recruitment challenge of decoding a message that has been distributed and hidden in different ways on the gchq.gov.uk Web site.

Levels: High School (9-12), College, Research
Languages: English
Math Topics: Cryptography

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