NCSC scheme will help critical organisations test their cyber defences
New NCSC Cyber Adversary Simulation scheme will help critical organisations strengthen their resilience through rigorous, real-world testing by trusted providers.
NCSC news
National Cyber Security Centre · Cyber security · Alerts and advice from the UK's cyber security authority.
Today
Tuesday 3 November
Cyber chief: UK facing AI-powered attacks on critical infrastructure within two years
The NCSC warns that ‘tech on the cheap’ has left UK organisations exposed to AI uncovering and exploiting longstanding cyber security weaknesses and calls for urgent investment in resilience.
Wednesday 21 October
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).
Thursday 8 October
China-linked malicious actors called out by UK and international partners for targeting sensitive data globally
Joint advisory with international partners highlights malicious targeting of organisations from a range of sectors across the globe.
Tuesday 6 October
Incident affecting ASOS customers
ASOS has said it is investigating a cyber incident and that some customer personal information may have been accessed.
Monday 28 September
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.
Tuesday 15 September
UK and allies expose spyware used by Iranian state actors to target dissidents, activists and journalists
UK and allies provide advice to help organisations and individuals at risk detect and counter the threat from CHOSEN BRICK malware.
Iranian cyber targeting of dissidents, activists and journalists
Advisory on CHOSEN BRICK malware, including technical analysis and advice to help individuals and organisations protect themselves.
Thursday 27 August
Disruptive cyber activity highlights risk from internet-exposed systems and edge devices
Owners of operational technology encouraged to address avoidable vulnerabilities, and build long-term cyber resilience.
Tuesday 4 August
NCSC statement in response to recent incidents resulting from frontier AI evaluations
A statement from Ollie Whitehouse, Chief Technology Officer at the NCSC, on AI security following recent incidents.
Thursday 23 July
UK and partners expose Russian state-supported actors for new ‘zero-click’ phishing campaign targeting Western organisations
GCHQ’s National Cyber Security Centre and international partners issue warning as ‘LAUNDRY BEAR’ cyber threat group exposed for targeted phishing campaign