Danfoss software breach affects refrigeration at 500 French supermarkets

A sophisticated cyber attack targeting software developed by the Danish firm Danfoss has compromised the refrigeration systems of more than 500 supermarkets across France. The breach, which hit major retail chains including Carrefour, Intermarché, and Coopérative U, caused industrial refrigerators to malfunction and heat up to temperatures as high as 50°C (122°F). This sudden failure of cooling infrastructure led to the immediate spoilage of vast quantities of fresh and frozen food, resulting in financial losses estimated in the millions of euros.

The attack specifically focused on the digital management systems provided by Danfoss, which are used by retailers to remotely monitor and control temperature settings across their store networks. By gaining access to these controls, the attackers were able to manipulate the settings, effectively turning off cooling capabilities or reversing them to heat the storage units. Store managers reported a rapid deterioration of stock, forcing many locations to dispose of entire inventories of perishable goods to ensure consumer safety and prevent the sale of contaminated items.

In response to the incident, French prosecutors have initiated a comprehensive national cyber-crime investigation to identify the perpetrators and determine the full extent of the breach. The attack has drawn sharp condemnation from European officials, who have highlighted the vulnerability of the food supply chain to digital interference. This incident underscores a growing concern regarding food security and the risks posed by cyber threats to critical civilian infrastructure, prompting calls for increased investment in cybersecurity measures for the retail and logistics sectors.