GCHQ Browser Heading GCHQ Print Heading

Protecting British business from cyber attacks

News article - 16 Jan 2015
As the Government steps up its efforts to protect British businesses from cyber-attacks, GCHQ announces the re-issue of ’10 Steps to Cyber Security’, providing updated guidance on the practical steps that organisations can take to improve the security of their networks and the information carried on them.
To accompany this, GCHQ is also publishing a new paper called ‘Common Cyber Attacks:Reducing the Impact’.  This paper provides an overview of common cyber-attacks, the perpetrators, their methods and capabilities.  It will help organisations to understand why ’10 Steps’ is an effective means of protecting organisations from cyber-attacks.
In addition, we are also pleased to announce that GCHQ and MI5 are working with their US partners to further strengthen UK-US collaboration on cyber security by establishing a joint cyber cell, with an operating presence in each country.  Aimed at strengthening mutual cyber defence, it will bring together agencies and law enforcement and allow staff from each agency to be co-located, enabling information and data to be shared at pace and at greater scale. 
Cryptoy in use showing Enigma options

Who we are

GCHQ is an intelligence and security organisation, working to keep Britain safe and secure in the challenging environment of modern communications.


What we do

UK citizens today conduct much of their lives over the internet, as do the Government, the Armed Services, Law Enforcement and industry.

For the UK to be safe and successful, the cyber connections and infrastructure we use need to be safe and secure. GCHQ plays a major role in making that a reality using our expertise and experience.

Image of a hand making a stop sign

How we work

GCHQ strives to ensure that life in the UK isn't compromised through cyber attack or on-line serious crime, employing some of the world's leading experts on Information Security.

Everything we do is governed by law, and overseen by the Foreign Secretary and other Ministers.


Latest news


Gay member of GCHQ staff talks about positive experience of coming out at work.
GCHQ recreates wartime code-breaking environment for students in the Cyber Games 3.0.
GCHQ donates 125 bags of underwear, food, toiletries and sleeping bags to a local charity for the homeless.
GCHQ's award winning innovation culture is examined by InfoQ magazine in "Mission-critical: a case study of GCHQ’s culture of innovation".
Cryptoy is a fun, free, educational app about cryptography, designed by GCHQ for use by secondary school students and their teachers.

Press Releases

CESG, the Information Security arm of GCHQ, in partnership with APM Group, has today launched the CESG Certified Training (CCT) scheme to assure high quality cyber security training in the UK.

Support to Military Operations​

Today, one of GCHQ's main tasks is to help protect the UK Military wherever they are deployed. This is not a new remit; it is in fact the whole reason GCHQ was formed in the first place.
The need to help protect the Military and arm them with the knowledge to keep them one step ahead proved to be the catalyst needed to develop Signals Intelligence at the start of World War One.
A lot has changed since 1914. The way the world communicates today is vastly different, but some things remain constant.
GCHQ is still committed to supporting the Military.

Our journey


GCHQ has been on a long and fascinating journey from the earliest days of the UK's Signals Intelligence effort at the beginning of World War I to the challenging technologies of today.

Director GCHQ, Robert Hannigan

Director GCHQ writes an opinion piece for the Financial Times

News article - 04 Nov 2014
In his first public statement, the new Director GCHQ Robert Hannigan discusses terrorist use of the Internet and how the security and intelligence agencies need greater support from technology companies to tackle this challenge.
A hand using a touchscreen device

Today's technology

GCHQ depends heavily on its use of technology to succeed in its vital intelligence and security mission.

As the digital world changes increasingly rapidly, it demands a furious pace of innovation in our technical systems.