Hackers broke into the refrigerators of the French blood service and raised the temperature in them to +110 degrees Celsius According to the Parisian newspaper, the cyber attack raised the temperature in the rooms where donated blood samples are supposed to be stored from 30 degrees Celsius to +110 degrees Celsius. The event affected several regional units. The attack disrupted the systems of Coolworld, which supplies refrigeration equipment for the French Blood Service (EFS).