The cyberattack last week that hit hundreds of French supermarket refrigerators had Europeans wondering if the nonstop warnings about AI risks had finally landed in the real world.

They hadn’t — at least, not yet.

Experts say the attack, which forced hundreds of retailers to throw away defrosted food and spoiled milk, was mostly a reminder of the importance of old-school cybersecurity in safeguarding essential goods and services.

The attack is a “typical example” of how “low-key cyber-enabled sabotage can affect very crucial supply for society,” said Ferdinand Gehringer, hybrid threats lead at FTI Consulting. 

It’s arguably the most consequential hack in the European Union this year, with tangible, disruptive real-world repercussions. France’s Prime Minister Sébastien Lecornu personally managed the fallout, which prompted coordination and information-sharing at the EU level. 

The perpetrators, whose identity and motives are currently unknown, hacked into digital systems to remotely raise the temperature of refrigerators in supermarkets including Intermarché and Carrefour.

One cybersecurity expert working with Lecornu’s office said the French government held meetings after the attack to try to map all the potentially affected sectors, beyond supermarkets. “We’re in the middle of the flu vaccination campaign,” he said, referring to vaccine storage, which also relies on temperature control solutions, though no such attacks have been registered.

To add to the fear and confusion, supermarkets in the Netherlands and Belgium experienced unrelated cyber incidents that same week. Though there was limited impact in those cases, they were a good example of “how big our reliance is in the food supply chain on IT and network systems,” Dutch food security minister Silvio Erkens told POLITICO. 

The attacks come after citizens and policymakers have spent months being bombarded with warnings about scenarios in which unpredictable advanced artificial intelligence models escape human control.

While most good and bad actors on the internet are increasingly using AI models to increase speed and capacity, cyber experts say the hackers in question in the French case most likely used traditional methods to take advantage of devices needlessly exposed to the internet.

Connecting devices to the internet in this way is “an old-fashioned bad practice,” said Amir Preminger, chief technology officer at Claroty, a cybersecurity company that identified a software flaw in a product made by Danfoss, one of the refrigeration companies targeted by the French hacks. Danfoss fixed that flaw in 2025. 

Food systems

The attacks come at a time when Europe’s food security is already under considerable pressure due to geopolitical insecurity and climate change. The continuing disruptions in the Strait of Hormuz are pushing up fuel and fertilizer prices at a time where farmers struggle with the fallout of extreme drought that caused lower yields in many parts of Europe. These problems are compounded by the blockade of the Black Sea which is fueling the rise of global food prices.

“It is very serious that cyber criminals attack our food systems,” said Else Groen, director general of trade body Independent Retail Europe. She nonetheless stressed that food supply chains are resilient, which reduces the chances that consumer food supply would be endangered — even if such attacks are already a “major blow” for retailers operating on razor-thin margins.

The incidents bring to the fore a long-running problem with so-called operational technology, meaning industrial devices with physical outputs, like refrigeration systems. Critical sectors are packed with these kinds of devices, many of which are old, poorly protected, unnecessarily connected to the Internet, or some combination of the three. They’re also obscure and sometimes forgotten, despite the ramifications if they’re tampered with.  

And last week’s problems are far from solved. French and German cyber authorities warned that attacks were probably still ongoing, and the Greek cyber agency and an industry tracker said after the attack that there were hundreds of devices still connected to the internet.

Preminger too said there are still devices exposed, though he added that the number is declining, and not all are necessarily vulnerable to attack. Another research group found that the number of exposed Danfoss devices had significantly decreased.

Finding a fix

What’s changed with the widespread diffusion of advanced AI models is that cyber attacks are now faster and easier to replicate. Claroty reproduced the original flaws in Danfoss products in 28 minutes at a cost of $6, it said. 

In broad terms, AI makes it easier to carry out many types of cyberattacks and enables attackers to pounce on software flaws more quickly. Financially motivated cybercriminals — who have already spent years extorting businesses and disrupting essential services like hospitals — can use AI to simultaneously launch attacks on multiple targets.

Though the motive for the attacks on French supermarkets remains unknown, it is notable that there was no reported attempt at extortion. The strike did come as Russia ramps up its campaign of hybrid warfare against Europe, and senior EU and European leaders have consistently warned that Moscow could use cyberattacks to disrupt real-world services. Beyond food supplies, AI-enhanced targeting could be aimed at banking, hospitals and the functioning of the internet itself.

Still, these fears of bad human actors using AI should be distinguished from the science-fiction scenarios pushed by so-called AI doomers, in which bots themselves are motivated and able on their own to wipe out humanity.

Digital security experts, including the EU’s own in-house cyber team, are also turning to AI for defense. But it’s not a silver bullet, said Rémi Enjolras, a chief technology officer at Splunk, part of Cisco. Critical industries need to stop “seeing AI as a magical tool that will solve everything and go back to the fundamentals,” he said.

The EU has passed laws intended to force critical industries and product manufacturers to get those fundamentals right. But France, for example, is lagging in implementing such national regulations, and there are few other incentives to get companies to do that difficult and costly work.

Still, the images of empty supermarket shelves could provide a new incentive. “It should serve as a kind of a wake-up call,” Enjolras said.

Émile Marzolf contributed to this report.

BRUSSELS — The European Commission’s cybersecurity division is rolling out a plan to use artificial intelligence to respond to high-risk cyberattacks, according to a document obtained by POLITICO.

The undated document, written by the Commission’s IT department, sets out how to prepare the EU executive’s cyber defenses for “emerging AI-driven threats.” It proposes an action plan to shore up defenses in light of AI, with the most urgent move being the speed of response to attacks.

Governments have rushed to grapple with the rising threat brought by AI’s ability to expose and exploit cybersecurity vulnerabilities. Incidents like OpenAI’s accidental intrusion into Hugging Face have prompted calls, including at the highest political level, to be more wary of advanced AI models.

Being able to respond quickly to cyberattacks is most crucial in “high-risk scenarios,” the EU executive’s internal cyber defenders warned, saying that the ability to detect an attack is “not sufficient if containment measures cannot be taken quickly enough.”

Officials at the in-house IT department, DG DIGIT, are planning to use automated “protective measures” in specific high-risk scenarios, it said. Those scenarios were redacted in the document, which was provided to POLITICO in response to a freedom of information request.

The plan does not amount to “uncontrolled automation” and there will be strict controls in place including human oversight, according to the document.

As well as laying out the response plan, the document sets out the cybersecurity challenges the Commission faces from AI.

The most advanced AI models are expected to “significantly increase the speed, scale and adaptability of cyberattacks” and the Commission must therefore have defenses in places for an environment where “attacks are likely to become faster, more frequent and more scalable,” it said.

Risks include situations where “malicious activity occurs outside EC [European Commission] normal working hours, spreads more rapidly across systems, or results in large-scale exfiltration or operational disruption before manual intervention can be organized by EC,” they said.

The Commission’s cyber division has sought approval internally to move ahead with the plans, it said, though it’s not clear whether the plans have yet been put in place.

The Commission didn’t respond to a request for comment.

The French government is closely watching a cybersecurity crisis at supermarkets after they were forced to throw out food due to an attack that knocked out refrigerators. 

The office of Prime Minister Sébastien Lecornu told POLITICO that he is “personally monitoring the situation” after cyberattacks targeted the refrigeration systems of several major supermarket chains. Lecornu has asked the country’s cybersecurity agency ANSSI to look into it, his office added.

News reports on Monday said that hundreds of supermarkets were affected. Intermarche and Cooperative U, two French supermarket chains, told AFP that they had been affected. Intermarche told AFP that affected stores will have to throw away affected fresh and frozen food. 

Dominique Schelcher, the CEO of Cooperative U, confirmed on X that a cyberattack hit “the cold production facilities of several stores in our network” since Sunday night.

EU agriculture and food commissioner Christophe Hansen condemned the attack, also mentioning Leclerc, France’s largest supermarket chain, which has not yet publicly confirmed that it is affected. 

French news reports state that the attack hit refrigerators manufactured by Danish company Danfoss. Prime Minister Lecornu’s office said ANSSI has found a flaw in software provided by “a Danish company” and has contacted it. The agency is coordinating with European counterparts as other countries may be affected, the office said.

Danfoss did not immediately respond to a request for comment. 

EU cybersecurity agency ENISA did not immediately respond to a request for comment.

BRUSSELS — The European Union’s cybersecurity agency and in-house research center have each begun experimenting with open artificial intelligence models from China, three EU officials have told POLITICO.

The Joint Research Centre (JRC) — the EU’s in-house scientific research center — is evaluating “publicly available open-weight models” originating from China, European Commission spokesperson Maciej Berestecki confirmed. The head of ENISA, the bloc’s agency responsible for cybersecurity, also said in an interview that his team was now testing Chinese AI.

The experiments with Chinese models at the JRC are part of a broader research project to evaluate artificial intelligence that also includes leading models from the United States and Europe, Berestecki said. “Models from different origins are included in a comparative scientific evaluation of their capabilities, performance, limitations and risks,” he said, adding that the JRC is also looking into their potential scientific applications.

AI safety and security — topics currently under intense scrutiny following a series of incidents in which advanced AI models hacked real-world networks during testing activities — are not the core focus of the JRC’s testing activities, according to a different Commission official, who was granted anonymity to discuss sensitive material.

Open-weight models are those whose core components are publicly released, allowing anyone to run the model and study how it works. China’s approach to AI has leaned more towards open models than the United States. Some major U.S. tech and AI companies, including chips giant NVIDIA, are investing in open-weight models.

Forced to choose

The U.S. and China are locked in a race to dominate in the technology, with Europe largely sitting on the sidelines. Without a viable European frontier model, European private and public organizations may be left to choose between American and Chinese providers for advanced AI applications.

In a recent speech, European Commission President Ursula von der Leyen suggested Europe should not try to win the frontier AI race. A top German tech company told POLITICO this week it was dropping Europe’s leading AI lab Mistral in favor of open-source Chinese models.

The JRC has not entered into any “bespoke access” or licensing negotiations with the relevant Chinese developers, Berestecki said. The models are run on the center’s “secure, on-premises scientific infrastructure” and the Commission is not intending to use Chinese models for its own purposes, he added.

EU cyber agency ENISA — which has gained access to advanced models from top U.S. AI firms Anthropic, OpenAI and Google — is also experimenting with “a couple” of open-weight Chinese models, its executive director Juhan Lepassaar confirmed in an interview on Wednesday. 

JRC and ENISA have been tasked with working together to set up an AI testing platform under a recent EU action plan on AI and cyber, the European Commission’s attempt to respond to the growing concerns after a series of incidents involving AI systems breaking out of testing environments and breaking into other organizations’ digital systems.