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We are the National Cyber Security Centre – part of the UK’s intelligence & cyber agency @GCHQ. We help to make the UK the safest place to live and work online.

London, England
Joined November 2015
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The NCSC has launched a new Cyber Adversary Simulation scheme that will help critical organisations strengthen their resilience through rigorous, real-world testing by trusted providers. Read more: ncsc.gov.uk/news/ncsc-scheme…
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It is vital to embed security, resilience and trust into the foundations of modern life. For organisations of every size, follow our guide to start building strong foundations⬇️ ncsc.gov.uk/collection/annua…
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This Critical Infrastructure Security Month, our threat-informed baseline can support essential services and nationally significant organisations with measuring and raising cyber resilience. Build strong cyber foundations with the CAF Core Profile: ncsc.gov.uk/collection/cyber…
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The State of the Cyber Nation report is both a reflection on the NCSC’s year in cyber security, and an important call to action for securing the nation’s future. Catch up on the launch speeches: youtube.com/live/lIF757dunFY Explore the report: ncsc.gov.uk/collection/annua…
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Today, we have set out our key judgements on how AI is expected to affect cyber security. Read the latest: ncsc.gov.uk/collection/annua…
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In this decisive period for cyber resilience, success depends on partnership. We are working closely with @DCMS to deliver Cyber Shield: the UK’s pioneering programme to build a national-scale, agentic cyber defence ecosystem. Learn more⬇️ ncsc.gov.uk/collection/annua…
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Today, NCSC CEO Richard Horne has said the UK is living through a ‘sliding doors’ moment of ‘enormous consequence’. Read the full speech now: ncsc.gov.uk/speech/richard-h…
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Our 2026 annual review, The State of the Cyber Nation, is out now. Hear from Cyber Minister Liz Lloyd & our CEO Dr Richard Horne live on YouTube from 10:45am. Watch the livestream: youtube.com/live/lIF757dunFY Read the report: ncsc.gov.uk/collection/annua…
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Today, we've published our 2026 annual review: The State of the Cyber Nation. The UK faces a moment of choice. The future of cyber resilience is not set. Read the report now: ncsc.gov.uk/collection/annua… @GCHQ @DanJarvisMBE
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Tomorrow, we reveal The State of the Cyber Nation. Watch our CEO deliver the NCSC’s annual speech live on YouTube from 10:45am, 3 November: youtube.com/live/lIF757dunFY
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NCSC CTO, Ollie Whitehouse, has warned of a a vulnerability patch wave. Frontier AI is increasingly able to identify vulnerabilities at great speed and scale, necessitating that all organisations address their latent technical debt. To read the blog: ncsc.gov.uk/blogs/prepare-fo…
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The NCSC’s Board Toolkit is designed to help leaders ensure that cyber resilience and risk management strategies are embedded throughout their organisation, supporting its people, systems, processes and technologies. For more information ⬇️ ncsc.gov.uk/collection/board…
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AI is redefining cyber security best practice. That's why we have added a new chapter to our NCSC research problem book: 'AI in cyber security problems’. To learn more and contribute to the discussion⬇️ ncsc.gov.uk/blogs/introducin…
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The critical PHP security issue highlights the importance of understanding your organisation’s attack surface. The NCSC’s guidance can support your organisation to navigate a vulnerability patch wave and respond with greater confidence. Learn more: ncsc.gov.uk/blogs/prepare-fo…
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New podcast: Ten years, four CEOs, one mission. This episode, we celebrate the NCSC's tenth anniversary with those who have led the organisation. They reflect on leadership, resilience, and managing crises, and what the next decade may hold. 🎧⬇️ ncsc.gov.uk/section/cyber-se…
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The NCSC has issued an update to the PHP alert reflecting the release of mitigations. We encourage UK organisations to take immediate action. For more information on the issue as well as our guidance, head to⬇️ ncsc.gov.uk/news/critical-se…
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The NCSC is encouraging UK organisations to prepare for immediate updating of systems using PHP. Where immediate remediation is not feasible, organisations should consider taking the system offline until it can be fully mitigated. For more⬇️ ncsc.gov.uk/news/critical-se…
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Receive malicious activity notifications from the NCSC. Early Warning can inform your organisation of potential cyber attacks on your network, as soon as possible, potentially giving you the crucial time needed to act. Sign up to Early Warning now⬇️ ncsc.gov.uk/section/active-c…
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Good cyber hygiene is the foundation of cyber defence💡 Our new guidance supports senior decision makers to build strong cyber security foundations and reduce the likelihood and impact of highly disruptive cyber attacks. Take action⬇️ ncsc.gov.uk/collection/disru… #CyberMonth2026
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Help shape future guidance and services💡 The NCSC's Active Cyber Defence programme is looking to connect with people involved in evaluating, selecting or adopting external attack surface management capabilities. Find out more⬇️ ncsc.gov.uk/blogs/help-ncsc-…
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