Science & Tech · Cybersecurity · 7 hrs ago
Cyberattack disrupts refrigeration systems at French supermarkets
A cyberattack targeted refrigeration systems at hundreds of supermarkets in France during the night of October 11–12.
The affected stores included branches of Intermarché, Coopérative U, Carrefour, E.Leclerc and Monoprix.
The attackers changed freezer and cold-room settings so temperatures rose sharply and the systems ran longer before alarms were triggered.
Some stores found their cold rooms overheated, and tons of goods were lost.
Investigators identified a vulnerability in software made by Danish company Danfoss.
France’s anti-cybercrime office has opened an investigation.
The available information does not say who carried out the attack or what further steps will follow.
A cyberattack disrupted refrigeration systems at several hundred French supermarkets during the night of 11 to 12 October.
The affected stores included branches of Intermarché, Netto, Coopérative U, Carrefour, E.Leclerc and Monoprix.
Freezers and cold rooms overheated, causing large losses of goods.
The attack changed defrost settings and extended the operation time, delaying alarms.
A vulnerability linked to software from Danish company Danfoss was identified, and France’s cybercrime office opened an investigation.
- Who
- Several hundred French supermarkets were affected, including stores belonging to major retail groups.
- What
- A cyberattack disrupted refrigeration systems and caused goods to be lost.
- When
- During the night of 11 to 12 October. The article was published on 12 October 2026.
- Where
- Supermarkets across France.
- Why
- The attack targeted refrigeration systems through a vulnerability linked to software from Danish company Danfoss; the motive is not stated.
This story does not have two clearly opposing sides.
The cyberattack targeted refrigeration systems at several hundred supermarkets.
The attack was probably launched, according to Charles Dezon.
Dezon’s store became aware of the problem after a delivery driver found the storeroom flooded.
- Affected Intermarché and Netto stores
- About 300
- Affected Coopérative U stores
- About 100
- Affected Carrefour stores
- 80
- Affected Monoprix stores
- About 30
- Refrigeration temperature at Dezon’s store
- 50 °C
- Identified software vulnerability
- Danfoss, a Danish company
What people are saying
The attack was probably launched around 11 p.m. but we only realised at 4 a.m., when our delivery driver saw that the storeroom was flooded.
Sources
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