A cyberattack targeted France's national blood service (Établissement français du sang, EFS) indirectly through its refrigeration contractor Coolworld. According to security researcher Lukasz Olejnik (@lukOlejnik), hackers remotely changed the configuration of freezers that normally kept blood donor samples at -30°C, resetting their target temperature to 110°C. The freezers also contained frozen plasma intended for transfusion. The malicious temperature change was detected by an on-call technician who noticed temperatures rising and intervened before any destruction occurred. Olejnik characterized this as a cyberattack on a sensitive layer of the healthcare system and underscored the potential severity with the phrase "From frozen peas to boiling plasma in three weeks...?"

A cyberattack targeted France's national blood service (Établissement français du sang, EFS) indirectly through its refrigeration contractor Coolworld. According to security researcher Lukasz Olejnik (@lukOlejnik), hackers remotely changed the configuration of freezers that normally kept blood donor samples at -30°C, resetting their target temperature to 110°C. The freezers also contained frozen plasma intended for transfusion. The malicious temperature change was detected by an on-call technician who noticed temperatures rising and intervened before any destruction occurred. Olejnik characterized this as a cyberattack on a sensitive layer of the healthcare system and underscored the potential severity with the phrase "From frozen peas to boiling plasma in three weeks...?"