Government Communications Headquarters (GCHQ) is an intelligence and security organisation responsible for providing signals intelligence (SIGINT) and...

is a British linguist who worked as a translator for the Government Communications Headquarters (GCHQ). In 2003, she leaked top-secret information to The...

Director of the Government Communications Headquarters is the highest-ranking official in the Government Communications Headquarters (GCHQ), a British...

machinery alongside the Secret Intelligence Service (MI6), Government Communications Headquarters (GCHQ), and Defence Intelligence (DI). MI5 is directed by...

(MI5), the Government Communications Headquarters (GCHQ) and Defence Intelligence (DI). The agencies are organised under three government departments...

In the early 1970s, while working at the United Kingdom Government Communications Headquarters (GCHQ), he developed an early public-key cryptography (PKC)...

authorities, with support provided by around 400 staff from Government Communications Headquarters (GCHQ), in addition to United States Air Force (USAF) and...

An equivalent system was developed secretly in 1973 at Government Communications Headquarters (GCHQ), the British signals intelligence agency, by the...

CST), formerly (from 2008-2014) called the Communications Security Establishment Canada (CSEC), is the Government of Canada's national cryptologic agency...

Unlike its main sister agencies, Security Service (MI5) and Government Communications Headquarters (GCHQ), SIS works exclusively in foreign intelligence gathering;...

inter-service Government Code and Cypher School (GC&CS), which subsequently developed into the Government Communications Headquarters (GCHQ) at Cheltenham...

provision about the Secret Intelligence Service and the Government Communications Headquarters, including provision for the issue of warrants and authorisations...

-76.0499409 Emergency Government Headquarters is the name given for a system of nuclear fallout shelters built by the Government of Canada in the 1950s...

and electronics businesses. The Government's electronic surveillance operation Government Communications Headquarters (GCHQ), known for its "doughnut-shaped"...

House. In 1965, ACSWS was transferred to the control of the Government Communications Headquarters (GCHQ), and became part of a network known as the Composite...

intelligence agencies, the National Security Agency (NSA), the Government Communications Headquarters (GCHQ), and the BND, respectively. Crypto AG sold equipment...

of a surveillance program jointly operated by Britain's Government Communications Headquarters (GCHQ) and the U.S. National Security Agency (NSA) that...

Sir Jeremy Ian Fleming KCMG CB was the Director of the Government Communications Headquarters, the UK's intelligence, cyber and security agency. He was...

to act as liaison to the cyber crimes unit in the UK's Government Communications Headquarters, quickly antagonising the unit's chief with his brash style...

states: the Government Communications Headquarters of the United Kingdom, the National Security Agency of the United States, the Communications Security...

the headquarters of MI5, the British domestic intelligence agency The Doughnut – the headquarters of the Government Communications Headquarters (GCHQ)...

breaking during World War II. In the post-war period, the Government Communications Headquarters (GCHQ) was formed and participated in programmes such as...

Agreement connected the signal intercept networks of the UK Government Communications Headquarters (GCHQ) and the US National Security Agency (NSA) at the...

Chiefs have been: Director General of MI5 Director of the Government Communications Headquarters "The Chief". Secret Intelligence Service. Archived from...

Threat Research Intelligence Group (JTRIG) is a unit of the Government Communications Headquarters (GCHQ), the British intelligence agency. The existence of...

is used by the British Government Communications Headquarters (GCHQ). This system is used to buffer most Internet communications that are extracted from...

the code name given by the British signals and communications agency Government Communications Headquarters (GCHQ) to an operation in which GCHQ successfully...

(due to its resemblance to a doughnut) to the headquarters of the Government Communications Headquarters (GCHQ), a British cryptography and intelligence...

CESG may refer to: Communications-Electronics Security Group, a group within the UK Government Communications Headquarters (GCHQ) Canada Education Savings...

algorithm, developed in the late 1960s, jointly by the Government Communications Headquarters (GCHQ) in the UK and the National Security Agency (NSA)...