@NCSC

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
ncsc.gov.uk
Joined November 2015
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11.1KMedia
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…

Critical security issue affecting PHP

Updated: The NCSC is encouraging UK organisations to take immediate action to mitigate a security issue affecting PHP (CVE-2026-109618 and CVE-2026-109619).

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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-…

Help the NCSC understand how organisations approach external attack surface risk

We're looking to hear from people involved in evaluating, selecting or adopting EASM.

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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⬇️ ncsc.gov.uk/cyberessentials/…
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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⬇️ ncsc.gov.uk/schemes/cyber-in…
Know your plan before you need it. Cyber incident exercising allows you to practice, evaluate and improve your response plans in a controlled environment.

ALT Know your plan before you need it. Cyber incident exercising allows you to practice, evaluate and improve your response plans in a controlled environment.

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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: ncsc.gov.uk/frontier-ai

Frontier AI: what you need to know

Organisations need to be ready to counter the enhanced capabilities of AI-powered attacks.

ncsc.gov.uk
Cabinet Office
@cabinetofficeukOct 12
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.
Graphic which reads: Building a safer, more secure Britain in the age of AI: Staying ahead of rapidly advancing AI; Shielding government from emerging AI threats; Government and businesses strengthening resilience together.

ALT Graphic which reads: Building a safer, more secure Britain in the age of AI: Staying ahead of rapidly advancing AI; Shielding government from emerging AI threats; Government and businesses strengthening resilience together.

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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⬇️ ncsc.gov.uk/collection/disru…
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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
An image of a letter from His Royal Highness King Charles III thanking NCSC staff for their contributions to national security.

ALT An image of a letter from His Royal Highness King Charles III thanking NCSC staff for their contributions to national security.

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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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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…

China-linked malicious actors called out by UK and international partners for targeting sensitive...

Joint advisory with international partners highlights malicious targeting of organisations from a range of sectors across the globe.

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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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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: ncsc.gov.uk/news/incident-af…
“The unauthorised notification sent out to ASOS customers has brought into the light how cyber incidents do not simply affect big business but can have repercussions for individuals much more widely too. “Individuals who received the notification should not click on any suspicious links and should stay vigilant to suspicious messages that may seek to take advantage of news of the breach. “If you are worried about your personal data being impacted, we recommend following the advice set out at ncsc.gov.uk to help stay safe online.” NCSC CEO Richard Horne

ALT “The unauthorised notification sent out to ASOS customers has brought into the light how cyber incidents do not simply affect big business but can have repercussions for individuals much more widely too. “Individuals who received the notification should not click on any suspicious links and should stay vigilant to suspicious messages that may seek to take advantage of news of the breach. “If you are worried about your personal data being impacted, we recommend following the advice set out at ncsc.gov.uk to help stay safe online.” NCSC CEO Richard Horne

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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🔍 ncsc.gov.uk/passkeys
Do you want to use a secure passkey? Yes, simplify my login. Passkeys provide simpler sign-ins.

ALT Do you want to use a secure passkey? Yes, simplify my login. Passkeys provide simpler sign-ins.

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“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: cyberuk.uk/2027/exhibition 📍11-13 May 2027, Liverpool Experience Campus
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It's Cyber Security Awareness Month! This October, seize the opportunity to build strong cyber foundations to assist you with staying safe online. 1/2
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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
Cyber Security Awareness Month: Strong Cyber Foundations

ALT Cyber Security Awareness Month: Strong Cyber Foundations

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The NCSC is urging UK organisations to promptly mitigate vulnerabilities affecting Citrix NetScaler ADC and Gateway, two of which are being actively exploited. Read more⬇️ ncsc.gov.uk/news/exploitatio…

Exploitation of vulnerabilities affecting Citrix NetScaler ADC and Citrix NetScaler Gateway

The NCSC is urging UK organisations to promptly mitigate vulnerabilities affecting Citrix NetScaler ADC and Gateway, two of which are being actively exploited.

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