The UK government has issued a renewed cybersecurity warning highlighting ongoing attacks by Russian-aligned hacktivist groups against British organisations. The alert was published by the National Cyber Security Centre (NCSC), which acts as the UK’s technical authority for cyber threats. According to the NCSC, these campaigns are part of a sustained effort to disrupt online services and create operational pressure on public-facing institutions across the country.
Who Is Behind the Attacks?
At the centre of the warning is NoName057(16), a well-known pro-Russian hacktivist collective that has been active since 2022. The group publicly aligns itself with Russian geopolitical interests and has repeatedly claimed responsibility for attacks against countries perceived as supporting Ukraine. While NoName057(16) is the most prominent actor referenced in the advisory, the NCSC notes that multiple ideologically aligned hacktivist groups are involved in similar campaigns.
Tactics and Methods Used
The attacks observed so far are primarily Distributed Denial-of-Service (DDoS) operations. These attacks work by overwhelming a target’s servers with excessive traffic, rendering websites or online services temporarily unavailable. Although DDoS attacks are not technically sophisticated compared with espionage or ransomware operations, the NCSC stresses that they can still be highly disruptive, especially when aimed at organisations that provide essential public services.
Hacktivist groups often coordinate activity through messaging platforms such as Telegram, where they announce targets, claim responsibility, and encourage supporters to participate. Some groups rely on crowdsourced tools that allow volunteers to contribute computing power, significantly amplifying the scale of attacks.
Targets Across the UK
According to the UK government, the main targets include local councils, government departments, transport services, and other public-sector or critical infrastructure organisations. Even short-lived service outages can cause knock-on effects, including delayed services, reputational damage, and additional financial costs linked to mitigation and recovery efforts.
The NCSC warns that while many attacks are brief, their frequency and persistence increase the overall burden on defenders and raise the risk of disruption during periods of heightened political tension.
Why the Threat Still Matters
A key message in the government’s warning is that low-level cyberattacks should not be underestimated. Hacktivist campaigns may lack technical sophistication, but their political motivation, coordination, and visibility allow them to generate outsized impact. These attacks also form part of a broader cyber landscape in which hostile activity has become a routine feature of international relations.
Government Advice to Organisations
The NCSC is urging UK organisations to review their cyber resilience, particularly their DDoS protection measures. Recommended steps include using specialist mitigation services, scalable hosting infrastructure, content delivery networks, and clearly defined incident response plans. The government emphasises that preparation and resilience — rather than panic — are the most effective responses to this ongoing threat.
