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Long before Ian Fleming penned the first James Bond novel, Moses sent agents to "spy out the land of Canaan" and Sun Tzu proffered guidelines for counterintelligence in The Art of War (c. 510 BC). Premodern intelligence dates spying back to the earliest days of civilization—and soon after civilization developed writing, cryptographic codes appeared. In about 400 BC, Spartans used the scytale, the earliest recorded device for encoding and decoding messages. Discover some of history's most notorious acts of espionage with Britannica: |
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Mata Hari |
Femme Fatales
While national spy agencies emerged in 15th century Europe, they first became major branches of government during the 20th century. Women, such as Mata Hari, have been effective spies, using their femininity to lure goverment officials into divulging secrets, as in the Profumo affair
of 1961. |
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| Enigma cypher machine |
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World War II
Project Ultra contributed to the Allies victory in World War II by decrypting messages sent using Germany's Enigma machines. The precursor to America's CIA, the OSS, also had its start during this war. |
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| Francis Gary Powers |
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Cold War
The Cold War was a period of intense espionage activity between the CIA and the KGB. One of the most famous events was the U2-Affair, in which American pilot Francis Gary Powers and his spy plane were shot down over the Soviet Union in 1960. |
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