Iranian-Linked Hackers Disrupt UK Energy Infrastructure in Four-Day Attack

A reported cyberattack attributed to Iran-linked actors forced a small UK power generator offline for four days in July; while it did not threaten national electricity supply, authorities see it as a significant proof-of-concept against critical infrastructure. The Department for Energy Security and Net Zero confirmed the outage affected a small-scale generator, NCSC has not released technical details, and DESNZ has briefed the sector and issued guidance emphasizing OT/IT segmentation, continuous monitoring, MFA for remote access, and rehearsed incident response.