NCSC UK

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 ⬇️

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⬇️

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:

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. 🎧⬇️

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⬇️

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⬇️

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⬇️

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⬇️ #CyberMonth2026

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⬇️

We're mid-way through cyber month, so there's never been a better time to ensure that your business is protected against the most common internet based cyber security threats. Check out Cyber Essentials now⬇️

The first time you try out your cyber incident response plan shouldn’t be on the day you're attacked. That's why the NCSC has assured Cyber Incident Exercising providers to help you test your response in a safe environment. For more information⬇️

The enhanced threat from AI-powered cyber attacks is real but organisations can retain the defensive advantage with urgent action now and board-level engagement. For more on how organisations can use AI to bolster defences and embrace opportunities:

AI is rapidly advancing. It’s imperative we respond by building a safer, more secure Britain. Today, AI Minister @KanishkaNarayan set out crucial steps the government is taking to strengthen the UK's resilience to AI risks.

Investing in strong cyber security underpins organisational growth💡 Our new guidance unpacks how to prepare your people, plans and processes for highly disruptive cyber incidents so that your organisation can respond and recover effectively. Act now⬇️

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

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⬇️ #CyberMonth2026

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.

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

If you are a customer of ASOS and concerned about your personal data being impacted by a cyber incident they are investigating, visit the NCSC website for actions to take:

Tired of juggling complex passwords? Passkeys are faster, simpler and keep your accounts more secure. Boost your cyber resilience this #cybermonth2026 by switching to passkeys where available. Find out more🔍

“It’s the who’s who of the industry.” Put your organisation at the heart of #CYBERUK27. Key content applications close 7 October. Apply now: 📍11-13 May 2027, Liverpool Experience Campus