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ONR Reports Cyber Security Progress at EDF

ONR Reports Cyber Security Progress at EDF

First seen 12 Nov 2026, 10:17 UTC • •
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ThreatCluster AI
ThreatCluster •November 12, 2026 at 10:17 UTC
  • •ONR upgraded EDF's regulatory attention level due to substantial cyber security improvements.
  • •EDF has strengthened governance and addressed legacy system risks as part of its cyber security program.
  • •Further improvements are needed before EDF can return to routine regulatory oversight.

The Office for Nuclear Regulation (ONR) has upgraded EDF's regulatory attention level for cyber security due to significant improvements made by the company. EDF has enhanced governance, addressed legacy system risks, and strengthened technical controls as part of its cyber security program. Despite these advancements, ONR maintains EDF at an enhanced regulatory attention level, indicating that further improvements are necessary before a return to routine oversight. ONR's inspectors have worked collaboratively with EDF, which has developed a comprehensive cyber security delivery program. EDF's efforts include the removal of legacy technology from its IT network. ONR emphasizes the need for continuous investment in cyber security to counter evolving threats. The regulatory body has three levels of attention: significantly enhanced, enhanced, and routine.

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Timeline

2023-01-01
EDF placed in significantly enhanced category
ONR categorized EDF as significantly enhanced due to initial concerns over cyber security practices.
Onr.Uk
2026-11-11
ONR upgrades EDF's regulatory attention level
ONR announced EDF's move from significantly enhanced to enhanced regulatory attention, reflecting improvements in cyber security governance.
Onr.Uk

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Common questions

What improvements has EDF made?
EDF has enhanced governance, addressed legacy system risks, and strengthened technical controls in its cyber security program.
What does the enhanced regulatory attention level mean?
It indicates that while improvements have been made, further progress is required before returning to routine oversight.
How does ONR support EDF's cyber security efforts?
ONR provides guidance and regulatory advice to help EDF continuously improve its cyber security practices.