Cyberattack on French Supermarkets Spoils Millions of Euros in Food

Foodserviceequipmentjournal

Cyberattack on French Supermarkets Spoils Millions of Euros in Food

First seen 13 Oct 2026, 17:32 UTC • •71.0

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ThreatCluster •October 13, 2026 at 17:33 UTC

•Over 400 French supermarkets were affected by a cyberattack on refrigeration systems.
•The attack caused food spoilage and potential health risks due to elevated temperatures.
•Danfoss systems were exploited, with many units running outdated software.

On October 11, 2026, a cyberattack targeted the refrigeration systems of over 400 French supermarkets, including major chains like Intermarché, Netto, and Carrefour. The attackers compromised systems supplied by Danish company Danfoss, forcing refrigeration units to heat to 50°C (122°F) for several hours, spoiling vast quantities of food and causing some fires. The total losses are estimated to be in the millions of euros. French authorities, including Prime Minister Sébastien Lecornu, have launched an investigation into the incident. The attack exploited vulnerabilities in outdated refrigeration systems, which had not received security updates. As of now, no group has claimed responsibility for the attack, and the investigation is ongoing.

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Timeline

2026-10-11

Cyberattack on French supermarkets initiated

Refrigeration systems in over 400 stores were hacked, causing temperatures to rise to 50°C.

Govinfosecurity

2026-10-12

Investigation launched by French authorities

Prime Minister Sébastien Lecornu instructed ANSSI to investigate the large-scale cyberattack.

Foodserviceequipmentjournal

2026-10-13

Danfoss confirms outdated systems exploited

Danfoss stated that many affected refrigeration units were older models with unpatched vulnerabilities.

Nationaltechnology

More articles in this cluster (8)

Threat Graph

8 entities, 7 inferred relationships (STIX 2.1).

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Technique (1)

Malware

Organization (7)

Carrefour
Coopérative U
Danfoss
E.Leclerc
Intermarché
Monoprix
Netto

Relationships

Malware related to Carrefour
Malware related to Coopérative U
Malware related to Danfoss
Malware related to E.Leclerc
Malware related to Intermarché
Malware related to Monoprix
Malware related to Netto

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Common questions

Which supermarket chains were affected?

Major chains affected include Intermarché, Netto, Coopérative U, Carrefour, Monoprix, and E.Leclerc.

What caused the food spoilage?

The attackers manipulated refrigeration systems to heat to 50°C, causing food to spoil.

Are there any known vulnerabilities?

The attack exploited vulnerabilities in outdated Danfoss refrigeration systems that had not received security updates.

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