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Cyber Attack Heats French Supermarket Freezers, Spoiling Millions in Food

Cyber Attack Heats French Supermarket Freezers, Spoiling Millions in Food

First seen 18 Oct 2026, 06:08 UTC • •
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ThreatCluster AI
ThreatCluster •October 18, 2026 at 07:07 UTC
  • •Hackers took control of supermarket refrigeration systems, causing food spoilage and fires.
  • •ANSSI identified vulnerabilities in Danfoss software, with many systems running outdated firmware.
  • •The attack impacted hundreds of stores across multiple major supermarket chains in France.

Hackers remotely compromised temperature controls of refrigerators and freezers in hundreds of French supermarkets, raising temperatures to as high as 80C and spoiling food worth millions of euros. The Paris public prosecutor's office has launched an investigation into this large-scale cyber attack, which affected major chains including Carrefour, Monoprix, and Intermarché. Initial reports indicate that between 400 and 700 stores were impacted, with some experiencing fires due to overheating equipment. The National Cybersecurity Agency (ANSSI) is investigating vulnerabilities in software from the Danish company Danfoss, which reportedly had outdated firmware. Experts suggest that the attackers may have disabled alarm systems or extended defrost cycles to avoid detection. No group has claimed responsibility for the attack, and the motive remains unclear.

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Timeline

2026-10-13
Cyber attack reported
Hackers compromised refrigeration systems in French supermarkets, causing significant food spoilage and operational disruptions.
Heraldscotland
2026-10-18
Investigation launched
The Paris public prosecutor's office opened an investigation into the large-scale cyber attack affecting multiple supermarket chains.
T2Online.In

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Common questions

Which supermarket chains were affected?
Major chains affected include Carrefour, Monoprix, Intermarché, and E.Leclerc.
What vulnerabilities were exploited?
The attack exploited vulnerabilities in refrigeration control software from Danfoss, which had outdated firmware.
What should supermarkets do to protect themselves?
Supermarkets should audit their refrigeration systems for vulnerabilities and ensure all software is updated to the latest versions.