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Cyberattack on French Supermarkets Spoils Food via Hacked Refrigeration Systems

Cyberattack on French Supermarkets Spoils Food via Hacked Refrigeration Systems

First seen 13 Oct 2026, 12:29 UTC • •
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ThreatCluster AI
ThreatCluster •October 13, 2026 at 13:30 UTC
  • •Hundreds of French supermarkets experienced food spoilage due to hacked refrigeration systems.
  • •The attack exploited vulnerabilities in Danfoss controllers, many of which were outdated.
  • •Authorities are investigating the incident, which may have implications for other European countries.

A cyberattack on supermarket refrigeration systems in France has led to significant food spoilage and fires. The attack affected hundreds of stores, including major retailers like Carrefour and Monoprix, with temperatures in some fridges reaching 50°C (122°F). The Paris prosecutor's office is investigating this large-scale incident, which has prompted concerns about vulnerabilities in Danfoss refrigeration controllers. Reports indicate that many of the affected systems were legacy units lacking security updates. Researchers noted that the systems were exposed to the internet and used a weak password scheme based on the current date. The attack has raised alarms across Europe, with neighboring countries potentially at risk. As of now, the full scope of the incident and the exact method of attack remain unclear.

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Timeline

2026-10-12
Cyberattack reported on French supermarkets
Refrigeration systems at multiple retailers were compromised, causing food spoilage and fires.
X
2026-10-13
Investigation launched by French authorities
The Paris prosecutor's office announced a national investigation into the cyberattack affecting food retailers.
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Common questions

Which supermarket chains were affected?
Major retailers including Carrefour, Monoprix, and Intermarché reported being impacted by the attack.
What vulnerabilities were exploited?
The attack exploited weaknesses in Danfoss refrigeration controllers, many of which were legacy systems without security updates.
What should affected supermarkets do?
They should assess their refrigeration systems for vulnerabilities, implement security updates, and review their internet exposure.