Between November 1 and 2, 2026, hackers targeted Coolworld, a cooling service provider for France's national blood service (EFS). The attackers changed temperature setpoints from -30°C to 110°C (approximately 230°F) at three sites in Bourgogne-Franche-Comté.
Alarm systems detected the temperature rise, allowing staff to transfer blood samples and frozen plasma to other facilities. France's Health Ministry reported that the intervention prevented any product loss, operational consequences, or patient harm.