Cyberattacks

UK Warns Power Companies After Cyberattack Takes Small Generator Offline

DESNZ has contacted power firms about cyber risk after a small UK generator was taken offline for four days. Site details withheld; wider energy system unaffected.

By Content Team

Aug 25, 2026

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The Department for Energy Security and Net Zero has contacted power companies to advise them about the risk of cyberattacks, after a small UK generator was taken offline for four days last month. The Telegraph reported the attack was carried out by hackers affiliated with the Iranian regime.

Neither the government nor the National Cyber Security Centre would identify the site, citing security reasons. DESNZ said the incident affected a small-scale generator and that at no point was there a risk to the UK's energy system. Britain's network runs a number of smaller gas units that supply short-term power when demand spikes.

The government is updating its cyber security regulations and working on a new energy resilience strategy, due later this year. Iran has long been rated a capable cyber power, and Western defenders have spent this year braced for state-linked activity amid its conflict with the US — while seeing little of it so far..

Source: BBC News

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