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NCSC defends UK from record number of cyber attacks

The National Cyber Security Centre's fourth Annual Review reveals its ongoing work against cyber attacks and support for the UK during the coronavirus pandemic.

The NCSC has published its fourth Annual Report

The National Cyber Security Centre defended the UK against a record number of cyber security incidents over the last year, according to its annual review.


The NCSC, which is a part of GCHQ, handled an average of 60 attacks per month during a year which saw its resources proactively focused on the COVID-19 pandemic.


The agency handled 723 serious incidents between last September and the end of August - a 20% increase on the 602 it handled the year before.


More than 200 of this year's incidents were related to coronavirus. Earlier this year the NCSC warned that bogus emails posing as communications from health authorities were being sent with links claiming to provide important updates, which when clicked instead lead to devices being infected with malware.


The growth in incidents handled by the NCSC reflects its ongoing efforts to proactively identify and mitigate threats, tips the organisation receives from its extensive network of partners and reports from victims themselves.

In a year heavily influenced by the pandemic, the review highlights the NCSC’s support for the healthcare sector, such as scanning more than 1 million NHS IP addresses for vulnerabilities leading to the detection of 51,000 indicators of compromise, and working with international allies to raise awareness of the threat of vaccine research targeting.

With cyber criminals looking to exploit public fear over the pandemic with coronavirus-related online scams, the NCSC and the City of London Police also launched the Suspicious Email Reporting Service, which received 2.3 million reports from the public in its first four months – resulting in thousands of malicious websites being taken down.

The NCSC also provided the technical assurances during the creation of the Virtual Parliament, as well as producing a wide range of advice for businesses and individuals switching to home working as a result of the pandemic.

A new remote working scenario was added to the NCSC’s ‘Exercise in a Box’ programme. The initiative, which allows people to test their cyber defences against realistic scenarios was used by people in 125 countries this year.

Lindy Cameron, Chief Executive of the NCSC, said:

“This review outlines the breadth of remarkable work delivered by the NCSC in the past year, largely against a backdrop of the shared global crisis of coronavirus.
“From handling hundreds of incidents to protecting our democratic institutions and keeping people safe while working remotely, our expertise has delivered across multiple frontiers.
“This has all been achieved with the fantastic support of government, businesses and citizens and I would urge them to continue contributing to our collective cyber security.”

Jeremy Fleming, Director of GCHQ, said:

“The world changed in 2020 and so did the balance of threats we are seeing.
“As this Review shows, the expertise of the NCSC, as part of GCHQ, has been invaluable in keeping the country safe: enabling us to defend our democracy, counter high levels of malicious state and criminal activity, and protect against those who have tried to exploit the pandemic.
“The years ahead are likely to be just as challenging, but I am confident that in the NCSC we have developed the capabilities, relationships and approaches to keep the UK at the forefront of global cyber security.”

The Rt Hon Penny Mordaunt MP, the Paymaster General, said:

“The COVID-19 pandemic continues to affect how we live and work. In a year of complex challenges, the NCSC has continued to react to swiftly-evolving cyber threats.
“This Review shows how the NCSC has taken decisive action against malicious actors in the UK and abroad who saw our digital lifelines as vectors for espionage, fraud and ransom attacks.
“It is vital that cyber security remains a priority for government, industry and the public in building UK resilience to a spectrum of risks.”

Summary of the NCSC’s Annual Review

Coronavirus response Some of the key figures in the NCSC’s response to the challenges of the pandemic were:

  • Rolling out Active Cyber Defence (ACD) services to 235 front-line health bodies, including NHS Trusts

  • Launching the pioneering Suspicious Email Reporting Service with City of London Police, with 2.3 million emails reported by the public leading to the removal of 22,000 malicious URLs

  • Scanning more than 1 million NHS IP addresses to check for weaknesses and sharing 51,000 Indicators of Compromise with the NHS.

Another important aspect of the NCSC’s response to the pandemic was its support for the NHS COVID-19 app, which included providing advice on cyber security best practice and publishing a series of blogs to ensure transparency around the development.

Ransomware The growing threat from ransomware is starkly revealed in the review, which discloses that the NCSC handled more than three times as many ransomware incidents compared to last year.

Alongside this rise, there has also been a marked shift in the way criminals carry out these attacks. Traditionally, victims are denied access to their own data until a ransom is paid, however attackers are increasingly threatening to leak sensitive information publicly until payment is received.

The NCSC has recently updated its guidance to reflect this changing nature, and emphasises its commitment to ensuring the organisations and businesses in the UK understand how they can make themselves as secure as possible, as well as support law enforcement to bring criminals responsible to justice.

Defending democracy The NCSC has played a bigger role than ever in defending the UK’s political process, assisting with the cyber security of a UK general election for the second time in its history.

When the pandemic led to the creation of a Virtual Parliament, the NCSC provided advice to ensure the new system had the right balance of security controls to mitigate the threat posed by hackers and cyber criminals.

The NCSC also worked closely with the Register to Vote team at the Cabinet Office to review the site’s ability to withstand peaks in traffic ahead of the 2019 election. Thanks to work to ensure resilience, the service remained stable when it received 366,000 applications on 25 November 2019 – almost seven times the daily average (25,000).

Working with international partners Over the past year, the NCSC shared vital threat intelligence to enable businesses, citizens, and international partners to better defend themselves against malicious activity from hostile states.

An example of this is when the UK and its international allies attributed cyber attacks against organisations conducting coronavirus vaccine research to Russia in July, which was complimented with mitigation advice such as enabling two-factor authentication and setting up a security monitoring capability.

Supporting businesses With many businesses and individuals moving to home working after the outbreak of coronavirus, the NCSC published 30 pieces of guidance and 60 blogs to help people and organisations large and small stay secure online.

The organisation also created a new scenario as part of its pioneering Exercise in a Box initiative to help people working remotely test their cyber defences. Exercise in a Box, which offers a series of scenarios to help organisations regularly test their cyber defences, was used by people in 125 countries in the last year.

And in April the NCSC launched the Cyber Aware campaign, helping the public and micro businesses to understand the best ways to stay secure online and feel empowered to take necessary protective actions.

5G security The NCSC played a key role in securing the UK’s telecoms networks. Alongside publishing detailed technical guidance and risk assessments for operators, the organisation also issued a summary of advice given to ministers to inform their verdict on high risk vendors (HRVs).

This included the organisation’s role in the UK Government’s decision to remove Huawei from the UK’s 5G network by the end of 2027, which came after a thorough NCSC review on the impact of US sanctions imposed on the company in May.

Encouraging greater diversity Through CyberFirst, the NCSC continued to see progress in its work to ensure greater diversity in the next generation of cyber security specialists.

The newly-expanded 2020 CyberFirst Girls Competition saw almost 12,000 girls take part, while there was a 60% rise in girls for this year’s summer courses, which were all delivered remotely.

The NCSC partnered with KPMG to produce the Decrypting Diversity report earlier this year, which sets out a series of commitments to help address issues around diversity and inclusion in the cyber security sector.


READ MORE: What are ransomware attacks and how can you stop them?


The Cyber Resilience Centre for the East Midlands is set up to support and help protect businesses in the five counties against cyber crime. 

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