A cyberattack targeted refrigeration equipment at three French blood-plasma storage sites on Monday, raising temperature and thawing thresholds to very high levels. Monitoring and alarm systems alerted staff, who intervened in time; no blood products were lost, no health effects were identified, and blood-bank operations and supplies to healthcare providers continue.

The attack targeted a supplier of refrigeration equipment. French authorities are investigating whether it was connected to attacks on refrigeration systems at supermarkets in several European countries, where food reportedly spoiled after temperatures were raised remotely.