World News

Cyberattack linked to Iran temporarily shuts down small UK power generator

British energy officials say the wider power grid was never at risk after a small-scale facility was taken offline for four days.

Updated Aug 24, 2026 · 00:17 UTC4 reports

The short version

A small-scale UK power generator was forced offline for four days in July following a cyberattack attributed to Iran-linked hackers.
The UK government stated that the wider energy grid faced no disruptions, as the facility was a small generator used for short-term supply.
Energy officials have briefed power sector executives, issued updated security guidance, and begun revising cybersecurity regulations.

A cyberattack reportedly carried out by hackers linked to Iran shut down a small British power plant for four days in July.[CNBC · The Guardian · BBC News]
The Department for Energy Security and Net Zero confirmed an incident impacted a small-scale energy generator but emphasized that the broader UK energy system was never at risk.[CNBC · Slashdot · The Guardian · BBC News]
The UK government and the National Cyber Security Centre declined to publicly identify the affected facility or assign official attribution.[CNBC · BBC News]
Following the incident, UK energy authorities briefed industry chief executives, issued advisory notices to operators, and began updating cybersecurity regulations.[CNBC · Slashdot · BBC News]

The specific identity, location, and technical vulnerabilities of the impacted power generator remain undisclosed by British security agencies.[CNBC · BBC News]
UK government officials have declined to formally confirm that the attack originated from Iranian state-sponsored actors.[CNBC]