Government Communications Headquarters/Related Articles
- See also changes related to Government Communications Headquarters, or pages that link to Government Communications Headquarters or to this page or whose text .
- Information assurance : The combination of computer security, communications security, auditing and administrative controls such as physical security and personnel security clearances
- Signals intelligence : 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).
- Nigel de Grey : Add brief definition or description
- Alastair Denniston : Add brief definition or description
- James Ellis : Please do not use this term in your topic list, because there is no single article for it. Please substitute a more precise term. See James Ellis (disambiguation) for a list of available, more precise, topics. Please add a new usage if needed.
- Enigma machine : The primary high-security cryptographic communications security machine of Nazi Germany. Unknown to the Germans, it had been substantially cryptanalyzed by the British Government Code and Cipher School, with French, Polish, and U.S. help.
- Thomas Flowers : Add brief definition or description
- Alfred Knox : Add brief definition or description
- John Tiltman : Add brief definition or description
- Alan Turing : British mathematician, code breaker and computer pioneer.
- William Welchman : Add brief definition or description
- Frederick Winterbotham : Add brief definition or description
- ULTRA : ULTRA was the main code word, in the Second World War, for British signals intelligence directed at Nazi Germany.
- Zimmermann telegram : Add brief definition or description
- National Security Agency : 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.
- Secret Intelligence Service : Britain's national-level civilian organization for intelligence and covert action
- Venona : Add brief definition or description