Several French blood banks are targeted in a cyberattack that raises temperatures in cold storage sites, the French health ministry and the national blood service say. Authorities report that technicians and alarm systems detect the changes before stored blood products are damaged.

The attack follows a wider pattern of cyberattacks on refrigeration equipment across Europe, including incidents affecting supermarket cold rooms that lead to food being discarded. Some outlets describe the campaign as part of “widening” strikes on fridge and freezer systems, while others focus specifically on the blood sector and how control systems were manipulated.

Reporting also varies in emphasis on scope and detail. Some sources say multiple regional blood banks are hit, while others specify that three cold storage sites in France’s national blood service (EFS) show altered temperature and defrosting thresholds. A few technology-focused outlets add that hackers reportedly targeted or interfered with refrigeration controls used by the blood service’s equipment provider, and that anomalies were detected and reversed in time.