Suspected Iran-linked attack knocked UK power plant offline for days
Suspected Iranian hackers knocked a small UK power plant offline for four days in July 2026, with no noticeable impact on the national grid.
Sources told The Telegraph that a British power plant was offline for four days in July 2026 following a suspected Iranian cyberattack, reported to the National Cyber Security Centre. The UK energy minister said the incident affected a small-scale energy generator with no noticeable effect on the power supply, and energy CEOs were briefed and given further advice afterward. The attack followed warnings about Iranian cyber activity against US energy, water, and government networks, including a coordinated attack on 30+ US community water utilities.
- Suspected Iranian hackers kept a British power plant offline for four days in July 2026.
- Impact was limited to a small-scale generator with no noticeable effect on UK power supply.
- Incident followed warnings of Iranian cyber activity targeting US energy, water, and government networks.
- UK Cyber Security and Resilience Bill, expected to pass in late 2026, aims to strengthen infrastructure defenses.
- Threat actors
- Sandworm
- Organizations
- NCSCThe Telegraph
- Countries
- IranUnited KingdomRussia
From the original article
4 min read at helpnetsecurity.com
News that suspected Iranian hackers caused the shutdown of a British power plant broke over the weekend, raising the question of whether UK’s power grid and, indeed, the country’s critical infrastructure can fend off destructive cyber attacks.
By @zeljkazorz · helpnetsecurity.com
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