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
Joined January 2016
And that's a wrap on the National Intelligence History Conference 2026. Over the past three days, we've welcomed leading scholars, researchers and practitioners for thought-provoking talks, fresh perspectives and engaging debate. A huge thank you to all our speakers and attendees for making this year's conference such a success. See you in 2028! #NIHC @GCHQ
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英国政府通信本部 @GCHQ 長官、小林自民党政調会長 @Kobahawk と、日英の情報協力の今後について話し合いました。 情報機関の改革、AIが国家安全保障に及ぼす影響、共通の安全保障上の課題に対応するための両国の連携強化について、とても有意義な議論ができました。🇬🇧🇯🇵
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Day 2 of the National Intelligence History Conference 2026 delivered an inspiring programme of talks, research and discussion. Thank you to our speakers and attendees for being part of it. #NIHC @GCHQ
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A look back at Day 1 of the National Intelligence History Conference 2026. Thank you to everyone who joined us for an engaging day of discussion, insight and debate. #NIHC @GCHQ
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Day one of the National Intelligence History Conference is underway at Bletchley Park, with a plenary welcome from Professor Danielle George CBE, Chief Scientific Advisor for National Security at @GCHQ. Over the coming days, NIHC will bring together leading scholars, researchers and practitioners to explore the development, practice and wider historical significance of intelligence. #NIHC
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Getting ready for the National Intelligence History Conference 2026. #NIHC @GCHQ
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Shhhh... don't tell anyone, but the #BBCTheSkyatNight team have infiltrated @GCHQ! 🕵🏿‍♀️ Watch Maggie's interview with a real-life spy, now on @BBCiPlayer.
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GCHQ retweeted
We were delighted to receive this letter from His Majesty King Charles III on the occasion of our tenth anniversary, recognising how the NCSC delivers on making the UK the safest place to live and work online. For practical cyber security advice visit ncsc.gov.uk
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GCHQ retweeted
For small businesses and sole traders, strong cyber security foundations are built one step at a time. You could complete a step from the Cyber Action Toolkit today in as little as ten minutes, try it now⬇️ cybertoolkit.service.ncsc.go… #CyberMonth2026
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GCHQ retweeted
This month, the National Cyber Security Centre, part of GCHQ, turns 10. In a special message, CEO Richard Horne marks this milestone and explains why cyber security is critical for the UK’s resilience and growth. To learn more about our mission, visit ncsc.gov.uk
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Today, the NCSC and international partners has exposed how China-linked company, Integrity Technology Group, has enabled malicious cyber activity worldwide. Organisations are urged to read the new advisory to understand the threat and techniques. ncsc.gov.uk/news/china-linke…
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Throughout #CyberMonth2026, learn about the guidance, tools and services the NCSC provides to help you navigate the evolving cyber landscape with confidence. Visit ncsc.gov.uk for more info. 2/2
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A new advisory exposes Iranian state cyber attackers using malware dubbed CHOSEN BRICK. Our Director of Operations Paul Chichester @0xchich says individuals at risk should follow advice in our new advisory⬇️ ncsc.gov.uk/news/iranian-cyb…
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Today, the NCSC alongside the @FBI and the Dutch AIVD, has published an advisory exposing spyware used by Iranian state actors to target dissidents, activists, and journalists. 1/2
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Passkeys are a faster, simpler and more secure way to sign in and forget the password headaches.🔐 Millions of users will now be able to choose passkeys on GOV.UK One Login for improved security and usability at point of access. @DCMS ncsc.gov.uk/passkeys
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On the 25th anniversary of 9/11, we remember the nearly 3,000 people who were killed, including 67 Britons. My thoughts are with all those who lost friends and family members that terrible day. Time may pass, but I know the grief is still felt just as deeply today. On this anniversary, we must remember that hatred and fear did not have the last word on 9/11. The terrorists sought to weaken and divide America, and everyone who believes in the values our countries share. But our response was clear: those who seek to destroy our way of life will never win. I saw that same defiance in Greater Manchester. When I was Mayor, Manchester was the victim of two horrific terrorist attacks. I will never forget the messages of support and friendship from people across America who knew better than anyone the suffering of our city. Some of the children of those killed in the 9/11 attacks wrote to the families of the people killed in Manchester, and they said this: We are you and you are us. We are one. We will never forget these terrible events, but we refuse to be defined by them. Terror still knocks on the door of democracy, but the United Kingdom and the United States stand together in memory of those we lost, and in defence of the values we cherish. We are you and you are us. And we will prevail.
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On the 25th anniversary of the 9/11 terror attacks, the United Kingdom remembers the near 3,000 people who lost their lives on that terrible day, including 67 British citizens. We pay tribute to all those affected including frontline emergency workers, who continue to confront the threat of terrorism and put their lives at risk to protect others. We honour the courage and sacrifice of members of the Armed Forces who have lost their lives in the fight against terrorism. Britain stood with our American friends a quarter of a century ago. We stand with you today. 🇬🇧🇺🇸
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Today we remember all those killed in the 9/11 attacks, including 67 British nationals. 25 years on, the UK stands with the United States in remembrance, solidarity and shared resolve. We will never forget.
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Tomorrow, Ukraine celebrates 35 years of independence. Tonight, London shines in blue and yellow. We stand with Ukraine. #SlavaUkraini 🇬🇧🤝🇺🇦
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Ukraine Independence Day is more than a date 🇺🇦 It's a language. A culture. A community. A shared identity passed from one generation to the next. Happy Ukraine Independence Day to our friends.
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