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Iran-Linked Cyberattack Tests Britain’s Energy Defenses

News | 2026/08/25 13:01

Iran-Linked Cyberattack Tests Britain’s Energy Defenses

UK energy system was not at risk

An Iran-linked cyberattack reportedly shut down a small UK energy generator for four days in July. UK officials said the affected generator was small and that the incident posed no threat to the wider electricity system or national generation capacity.

The attack comes amid broader warnings from the NCSC that hostile states are increasingly targeting UK infrastructure. A government spokesperson for the Department for Energy Security and Net Zero (DESNZ) said the energy facility was a “small scale energy generator.”

Government officials would not confirm which site was affected but cited national security concerns. Responding to the attack, the government wrote to businesses and instructed power company chief executives with advice.

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