On November 5, 2026, U.S. federal agencies, including CISA, the FBI, and others, issued a warning about cyberattacks targeting industrial refrigeration systems globally. These attacks exploit vulnerabilities in internet-accessible electronic temperature controllers and commercial refrigeration controllers.

The attacks have already affected over 100 stores across several European countries, including France, Belgium, and Sweden. The FBI highlighted that these systems are attractive targets due to their critical role in maintaining temperature-sensitive products.

The cyberattacks have led to food spoilage, equipment damage, and potential fire hazards. In particular, the French Blood Establishment confirmed that three of its blood banks experienced a temperature spike due to a cyberattack.

The agencies recommend immediate actions such as removing internet access to control systems and applying software updates. The synchronized timing of the attacks suggests they could be the work of a nation-state threat actor.

The incidents have been linked to disruptions in supermarket refrigeration systems across Europe, resulting in significant inventory losses. The suspected involvement of an unknown threat actor has been noted.