Cyberattack Disrupts Major French Supermarkets

On October 12, 2026, major French supermarket chains reported a cyberattack that disrupted refrigeration systems across hundreds of stores. The attack caused refrigerators to malfunction, leading to major food spoilage and raising concerns about food security.

Targeted Retailers

The retailers affected include E. Leclerc, Intermarché, and Cooperative U. Cooperative U’s CEO described the attack as unprecedented. The impact was severe, with at least 300 Intermarché or Netto brand stores, over 100 Cooperative U outlets, and several E. Leclerc stores being targeted.

“Food security requires more attention at all levels,” said EU’s food and agriculture commissioner Christophe Hansen.

The attack also affected other major chains and reportedly led to fires in some locations.

Details of the Attack

Hackers remotely triggered the defrosting of refrigeration systems, causing significant food losses. Carrefour reported 80 affected supermarkets out of 6,000, while E. Leclerc noted the issue stemmed from an attack on a refrigeration equipment supplier.

Danfoss, a Danish manufacturer, confirmed that its legacy systems were targeted. These systems no longer receive software or security updates. Affected models included the AK-SM800 and AK-SC355.

Broader Implications

Dutch operator Ahold Delhaize experienced a related cybersecurity issue, impacting its grocery delivery through a mobile app. French cybersecurity agencies and European counterparts are seeking to prevent further spread by identifying vulnerabilities and alerting affected companies.

An investigation has been launched by Paris prosecutors to establish the scale of damage and foodstuff losses.

Concerns Over Hybrid Attacks

The incident heightens fears of cyberattacks across Europe. Industries once isolated from the internet are now integrated into connected systems, increasing their vulnerability. President Emmanuel Macron has taken measures to safeguard critical French infrastructure from potential attacks, particularly amid ongoing geopolitical tensions.