Government Communications Headquarters > Related Articles
From Citizendium, the Citizens' Compendium
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Parent topics
- Information assurance [r]: The combination of computer security, communications security, and administrative controls such as physical security and personnel security clearances [e]
- Signals intelligence [r]: the practice of acquiring information through monitoring the electromagnetic signals deliberately trasmitted by an opponent, including communications (COMINT) and non-communications electronics such as radar (ELINT). [e]
Subtopics
- Nigel de Grey [r]: Add brief definition or description
- Alastair Denniston [r]: Add brief definition or description
- James Ellis [r]: President and CEO, Institute of Nuclear Power Operations; member of the board, Lockheed Martin, Level 3 Communications, and Inmarsat; Admiral, United States Navy, Retired; former commander, United States Strategic Command; Military Senior Advisor Panel, Iraq Study Group]] [e]
- Enigma machine [r]: The primary high-security cryptographic communications security machine of Nazi Germany. Unknown to the Germans, it had been substantially cryptanalyzed by tbe British Government Code and Cipher School, with French, Polish, and U.S. help. [e]
- Thomas Flowers [r]: Add brief definition or description
- Alfred Knox [r]: Add brief definition or description
- John Tiltman [r]: Add brief definition or description
- Alan Turing [r]: British mathematician, code breaker and computer pioneer. [e]
- William Welchman [r]: Add brief definition or description
- Frederick Winterbotham [r]: Add brief definition or description
- ULTRA [r]: ULTRA was the main code word, in the Second World War, for British signals intelligence directed at Nazi Germany. [e]
- Zimmermann telegram [r]: Add brief definition or description
Other related topics
- National Security Agency [r]: An organization within the United States Department of Defense, with the dual roles of the principal signals intelligence agency in the United States intelligence community, but also having the responsibility for information assurance of military, diplomatic, and other critical communications. [e]
- Secret Intelligence Service [r]: Britain's national-level civilian organization for intelligence and covert action [e]
- Venona [r]: Add brief definition or description
