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NCSC Warns of Increased Russian Hacktivist Threat to UK Online Services

ID: 0c599bce-d640-5c97-b2c4-db64cea1a394

STIX ID: report--0c599bce-d640-5c97-b2c4-db64cea1a394

Feed Name: TechRepublic Security

Threat Score
75/100

Date Published: 2026-01-20

Date Updated: 2026-04-23

Author: TechRepublic Staff

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The NCSC has issued an urgent warning that Russian-aligned hacktivist groups (e.g., NoName057(16), Cyber Army of Russia Reborn, Z-Pentest, Sector16) are escalating from DDoS website disruptions to targeting operational technology across UK critical infrastructure and public services; these groups use automated DDoS tools, Telegram coordination, and exploitable remote access to cause service outages and, in some reported cases, physical damage, prompting detailed mitigation guidance.

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