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  2. US signals intelligence in the Cold War - Wikipedia

    en.wikipedia.org/wiki/US_signals_intelligence_in...

    The military services formed a "Joint Operating Plan" to cover 1946-1949, but this had its disadvantages. The situation became a good deal more complex with the passage of the National Security Act of 1947, which created a separate Air Force and Central Intelligence Agency, as well as unifying the military services under a Secretary of Defense.

  3. Signals intelligence - Wikipedia

    en.wikipedia.org/wiki/Signals_intelligence

    Signals intelligence (SIGINT) is the act and field of intelligence-gathering by interception of signals, whether communications between people (communications intelligence—abbreviated to COMINT) or from electronic signals not directly used in communication (electronic intelligence—abbreviated to ELINT). [1]

  4. List of intelligence gathering disciplines - Wikipedia

    en.wikipedia.org/wiki/List_of_intelligence...

    Prisoners of war (POWs) or detainees; Refugees; Routine patrolling (military police, patrols, etc.) Traveler debriefing [broken anchor] (e.g. CIA Domestic Contact Service) MI6 is often thought to use human intelligence to operate in different countries or Britain itself to protect the country from global affairs. However, this is usually ...

  5. Signals intelligence in modern history - Wikipedia

    en.wikipedia.org/wiki/Signals_intelligence_in...

    Before the development of radar and other electronics techniques, signals intelligence (SIGINT) and communications intelligence (COMINT) were essentially synonymous. Sir Francis Walsingham ran a postal interception bureau with some cryptanalytic capability during the reign of Elizabeth I, but the technology was only slightly less advanced than men with shotguns, during World War I, who jammed ...

  6. British intelligence agencies - Wikipedia

    en.wikipedia.org/wiki/British_intelligence_agencies

    The history of the organisations dates back to the 19th century. The decryption of the Zimmermann Telegram in 1917 was described as the most significant intelligence triumph for Britain during World War I, [1] and one of the earliest occasions on which a piece of signals intelligence influenced world events. [2]

  7. Measurement and signature intelligence - Wikipedia

    en.wikipedia.org/wiki/Measurement_and_Signature...

    This often includes radar intelligence, acoustic intelligence, nuclear intelligence, and chemical and biological intelligence. MASINT is defined as scientific and technical intelligence derived from the analysis of data obtained from sensing instruments for the purpose of identifying any distinctive features associated with the source, emitter ...

  8. Cold War espionage - Wikipedia

    en.wikipedia.org/wiki/Cold_War_espionage

    Klaus Fuchs, exposed in 1950, is considered to have been the most valuable of the atomic spies during the Manhattan Project.. Cold War espionage describes the intelligence gathering activities during the Cold War (c. 1947–1991) between the Western allies (primarily the US and Western Europe) and the Eastern Bloc (primarily the Soviet Union and allied countries of the Warsaw Pact). [1]

  9. Category:Signals intelligence - Wikipedia

    en.wikipedia.org/wiki/Category:Signals_intelligence

    Sentient (intelligence analysis system) SEXINT; USNS Sgt. Joseph E. Muller; Shaanxi Y-9JZ; Short-range agent communications; SIGINT Activity Designator; Signals intelligence by alliances, nations and industries; Signals intelligence in modern history; US signals intelligence in the Cold War; 2011 Slovenian YouTube incident; SOSUS; Special ...