English

Initialism

GCHQ

1. Government Communications Headquarters, a British intelligence agency.
   • 2013, Ravi Gupta, Hugh Brooks, Using Social Media for Global Security, page 190:

     For the challenge, GCHQ posted a code at www.canyoucrackit.co.uk and invited British citizens to solve it. The code consisted of 160 letters and numbers arranged in a rectangular display.

See also

• MI6
• MI5
• SIS
• SBS
• SAS