The National Cyber Security Centre

Helping to make the UK the safest place to live and do business online. Read more about the NCSC.

The National Cyber Security Centre a part of GCHQ

Guidance for enterprise administrators, small businesses and home users in relation to the recently published 'Krack' vulnerability in Wi-Fi networks protected by WPA2.

Krack logo

NCSC's Small Business Guide now available

How to improve cyber security within your organisation - quickly, easily and at low cost.

Why you should protect your organisation's data, assets, and reputation from the growing online threat. 

UK small businesses can shield themselves from potential online attacks with new NCSC guide.

Northern Ireland visit

NCSC building with logo

Cyber Authority outlines commitment to Northern Ireland online safety

Delegates of the National Cyber Security Centre visited Northern Ireland to outline ongoing work to help the nation thrive in the digital age.

Ciaran Martin's speech in Belfast

Speaking on 19 October, Ciaran Martin outlined the commitment to working with Northern Ireland’s online security.

2017 Annual Review

The 2017 Annual Review sets out the progress made within the first year of operations at the National Cyber Security Centre

Equifax cyber incident

Latest information from the NCSC on the recent Equifax cyber incident.

NCSC advice for Equifax customers affected by the recent incident.

"Living with password re-use" - related NCSC guidance.

Active Cyber Defence

Four ‘Active Cyber Defence’ programmes will help to immediately improve basic cyber security across UK business and government departments.

Ian Levy explains why the NCSC asked Nominet to build this critical service.

Introducing Web Check — a service that helps you find and fix common vulnerabilities in UK public sector websites you manage.

Meet five women leading the way for diversity within the NCSC.

Cyber security diversity
NCSC industry 100 copyright NCSC

At the NCSC we are inviting organisations of all sizes to work with us to achieve a greater understanding of the cyber security environment.

See more about our role after the NIS Directive's implementation, and how we'll be helping those designated operators of essential services and competent authorities

Lights over Europe

Ransomware Guidance

Guidance for enterprise administrators who want to reduce the likelihood of being held to ransom by WannaCry (or other types of ransomware).

Guidance for home users or small businesses who want to reduce the likelihood of being held to ransom by WannaCry (or other types of ransomware).

How to prevent a ransomware incident, and what to do if your organisation is infected.

Find out about the NCSC...

The NCSC is making the UK one of the safest places in the world to live and do business online.

Read about the key events that lead to the formation of the National Cyber Security Centre.

The head of the NCSC leadership team is Chief Executive Officer, Ciaran Martin. 

Services and resources

Cyber Aware provides cyber security advice for small businesses and individuals. By using strong passwords made up of three random words and always downloading the latest software updates, you can help protect your devices from cyber criminals.

Protect your business against cyber threats. Cyber Essentials is a government-backed and industry-supported scheme to guide businesses in protecting themselves against cyber threats. Cyber Essentials is for all organisations, of all sizes, and in all sectors - we encourage all to adopt the requirements as appropriate to their business.

Join our community on CiSP. CiSP allows members from across sectors and organisations to exchange cyber threat information in real time, in a secure and dynamic environment, while operating within a framework that protects the confidentiality of shared information.