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GCHQ
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GCHQ

@GCHQ
The UK's intelligence, security and cyber agency, helping to keep the UK safe online and in the real world. Follow the cyber security arm of our mission @NCSC.
United Kingdom
gchq.gov.uk
Born November 1
Joined January 2016
325
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186.1K
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  • user avatar
    GCHQ
    @GCHQ
    Aug 17
    👀 Think you've got sharp eyes? Take on this week's #GCHQPuzzle and put your skills to the test.
    Puzzle image titled "Off the rails" with a challenge to identify the final member of this sequence: Central, Circle, District, Bakerloo, Piccadilly, Hammersmith and City. Includes GCHQ logo and #GCHQPuzzle.
  • user avatar
    GCHQ
    @GCHQ
    Aug 13
    Our #TuringChallenge might just be our toughest puzzling challenge yet. But can you work your way through each level and get to the end? Give it a go ⬇️ gchq.gov.uk/information/tu…
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  • user avatar
    GCHQ
    @GCHQ
    Aug 11
    Our brilliant experts at the @NCSC work to make the UK the safest place to live and work online 💻 Their mission is to help protect our economy and society from cyber attacks, providing crucial advice to bolster defences and raise resilience.
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  • user avatar
    GCHQ
    @GCHQ
    Aug 10
    🔍 Can you solve this week’s #GCHQPuzzle? No calculators, no searching — just logic and a little creativity. Think you’ve got it? Comment your answer below and challenge a friend to try too ⬇️
    A purple puzzle card with the heading "ENIGMA RATING 1." It lists three questions: a) about plating replacing nickel electroplating in car manufacturing, b) identifying the lead guitarist of U2, and c) a Swahili word for 'journey' now meaning a wildlife‑viewing trip. The card includes the hashtag #GCHQPuzzle and GCHQ branding.
  • user avatar
    GCHQ
    @GCHQ
    Aug 3
    Whether you're a first-time solver or a seasoned puzzler, everyone's welcome to solve this week's #GCHQPuzzle 🧩 How did you find this one? Let us know in the comments below ⬇️
    A puzzle from GCHQ asks: "Premier locations. If C=SB, CP=SP, MU=OT and LU=ER, what does F=?" The image has a blue gradient background with a decorative border. "Enigma Rating 1" is displayed at the top right, and the GCHQ logo is at the bottom. The hashtag #GCHQPuzzle is also included.

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