How did Iran manage to knock a UK power generator offline for four days, and what does it mean for other critical…

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Just days before the FBI issued a warning over Iranian attempts to hack critical infrastructure in the US, a UK power generation plant was taken offline for four days after a cyberattack.

The attack has been attributed to Iran, which has stepped up its offensive cyber warfare efforts since the US and Israel began conducting strikes in February 2026. These cyberattacks have been largely focused on the US and its allies.

A UK government spokesperson responded to the attack, stating, “This story refers to an incident impacting a small-scale energy generator, and at no point was there a risk to the wider energy system. The U.K. has a highly resilient energy system. We work closely with the energy sector to protect infrastructure and ensure the highest security standards,” (via CNBC).

The wider impact for critical infrastructure

While the attack may have only targeted a ‘small-scale energy generator’, it shows...

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