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Cyberattack Disrupts Refrigeration at 350+ French Supermarkets

Cyberattack Disrupts Refrigeration at 350+ French Supermarkets

First seen 15 Oct 2026, 16:36 UTC • •

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ThreatCluster AI
ThreatCluster •October 15, 2026 at 17:37 UTC
  • •Over 350 French supermarkets were affected by a cyberattack on Danfoss refrigeration systems.
  • •The attack caused temperatures in refrigeration units to rise to 50°C, resulting in food spoilage and fires.
  • •French authorities are investigating the incident, while retailers globally are advised to review their refrigeration security.

A cyberattack targeting Danish refrigeration provider Danfoss has affected over 350 supermarkets in France, including major chains like Intermarché and Coopérative U. The attack compromised connected refrigeration systems, causing temperatures to rise as high as 50°C, leading to significant food spoilage and operational disruptions. French authorities reported food losses and fires, with estimated damages reaching tens of millions of euros. The exact method of the attack remains undisclosed, but outdated firmware on refrigeration units has been identified as a potential vulnerability. French Prime Minister Sébastien Lecornu has directed the National Cybersecurity Agency (ANSSI) to investigate the incident. The attack also impacted supermarkets in neighboring countries, including Spain and Portugal. Retailers worldwide are urged to assess their refrigeration security and access controls.

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Timeline

2026-10-12
Cyberattack on Danfoss reported
Danfoss confirmed a cyberattack affecting refrigeration systems at multiple supermarkets, causing operational disruptions.
Teiss
2026-10-12
French Prime Minister directs investigation
Prime Minister Sébastien Lecornu ordered the National Cybersecurity Agency to investigate the cyberattack's impact.
Teiss
2026-10-14
Food spoilage reported across France
Reports emerged of widespread food spoilage and operational chaos in supermarkets due to the cyberattack.
Insideretail.Asia

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Common questions

Which supermarket chains are affected?
Major chains affected include Intermarché, Coopérative U, Carrefour Market, and Super U.
What caused the food spoilage?
The cyberattack compromised refrigeration systems, causing temperatures to rise significantly, leading to food spoilage.
What actions are being taken in response?
The French National Cybersecurity Agency is investigating the incident, and supermarket chains are mobilizing to restore operations.