Cyberattack Remotely Defrosts Refrigerators at French Supermarkets

· Cybersecurity · France

A cyberattack overnight Sunday disrupted refrigeration at hundreds of French supermarkets, spoiling fresh food at stores run by some of the country's largest grocery chains. Attackers remotely defrosted refrigerators at multiple chains, in an attack that reportedly targeted Danfoss refrigeration controllers. The disruption affected stores belonging to major French grocery operators and caused food spoilage, an operational and financial blow beyond typical data-focused cyber incidents. The case illustrates the expanding attack surface created by internet-connected operational technology in retail and food supply chains, where control systems for refrigeration, cooling and other equipment are increasingly reachable from networks. It underscores that cyber risk now extends to physical processes and perishable inventory, not just data confidentiality, and that securing industrial control systems is becoming a mainstream concern for retailers.

Why it matters：It shows cyber risk moving into operational technology, where attacks on connected control systems can directly disrupt physical supply chains and retail operations.

Key points

  • The attack overnight Sunday hit refrigerators at hundreds of French supermarkets.
  • It reportedly targeted Danfoss refrigeration controllers.
  • Stores run by some of France's largest grocery chains suffered spoiled fresh food.

Sources (original reporting)

More stories from this day