Hackers targeted French grocery chains on a recent Sunday , remotely heating refrigeration units to 50 degrees Celsius. This attack caused millions of euros in losses across hundreds of stores, forcing the disposal of massive amounts of food.
The 50-Degree Celsius Sabotage of French Cold Chains
A coordinated cyber attack on Sunday night saw attackers remotely commandeer refrigeration systems across France, forcing units to blow air at 50 degrees Celsius. According to the report ,this caused internal warehouse temperatures to climb to approximately 36 degrees,effectively turning freezers into heat chambers. The precision of the attack suggests a professional threat actor capable of manipulating industrial hardware at scale.
The immediate result was the catastrophic spoilage of thousands of kilograms of perishable goods. Because the attack happened overnight, the damage was widespread before staff could intervene, leading to a massive disposal effort of dairy, frozen goods, and produce.
Multi-Million Euro Losses at Intermarché and Coopérative U
Intermarché and Coopérative U suffered some of the most visible damage from the incursion. Intermarché reported that between 150 and 200 of its stores experienced malfunctions, with its parent company, Groupement Mousquetaires, estimating financial losses in the multi-million-euro range. Similarly, Coopérative U confirmed that essential equipment at around 100 facilities was hijacked.
The human scale of the crisis is evident in individual store reports. Sophie Matt, a manager in Haguenau, Bas-Rhin, estimated that her single location alone lost roughly €50,000 in ruined stock. Dominion Schelcher, the CEO of Coopérative U, described the assault as "unprecedented" and "extremely serious" because it targeted sytems vital to the national food supply.
The E-Leclerc Vendor Breach and Supply Chain Fragility
E-Leclerc's experience reveals a critical vulnerability in the modern retail ecosystem: the third-party vendor. As reported in the source, the attackers did not breach E-Leclerc directly but instead compromised a refrigeration equipment vendor. This allowed the hackers to trigger a cascade of remote defrosting across numerous store locations simultaneously.
This method highlights a growing trend in cyber warfare where attackers target the weakest link in a supply chain to achieve a wide-scale effect. By compromising one vendor, the attackers gained a "backdoor" into the physical infrastructure of multiple retail sites, bypassing the primary security of the supermarket chains themselves.
President Macron's Warning on Russian Hybrid Attacks
The timing of this attack aligns with broader national security concerns in France. President Emmanuel Macron has recently ordered the fortification of critical infrastructure to defend against hybrid Russian attacks. This incident serves as a concrete example of how zero-day vulnerabilities in everyday business equipment can be exploited to create physical chaos.
The French Ministry of Commerce is currently coordinating with suppliers to understand the full scope of the breach. This move suggests that the government views the attack not merely as a corporate crime, but as a potential test of national resilience against hybrid threats that target public welfare.
The Unidentified Actors and the Status of Carrefour Market
While the damage is clear, several key details remain unknown. paris prosecutors have opened an investigation to map the victims and quantify the spoilage, but the identity of the perpetrators has not yet been revealed. it remains unclear if this was a targeted political statement or a financially motivated campaign.
Furthermore, the full list of victims is still emerging. The report notes that while major chains like E-Leclerc and Intermarché have confirmed the breach, other giants such as Carrefour Market and Monoprix have not yet confirmed their involvement, though they remain on high alert.
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