A hacker reportedly altered the temperature settings on refrigeration equipment used by the French Blood Establishment, EFS, from around −30°C to 110°C after targeting its cooling service provider, Coolworld This article explores plasma freezers hijacked. . The incident occurred overnight between November 1 and 2, 2026, raising concerns about frozen plasma stored for patient transfusions.
According to reporting by Cyberattaque citing Le Canard enchaîné, facilities in Bourgogne-Franche-Comté were among those affected.
Later, the Electronic Forensic Services (EFS) informed Le Canard enchaîné that frozen plasma intended for transfusions was also involved. French Blood Plasma Freezers were hijacked, but the 110°C figure refers to a setpoint in the control system, not a temperature reached inside the freezer. This distinction is crucial because the risk is determined by actual storage conditions and how long products remained outside approved limits.
A CERT-FR security alert from October 12 confirmed multiple compromises involving Danfoss AK-SM and AK-SC controllers, Copeland, and Dixell XWEB systems. ZeroOwl also documented internet-facing Danfoss systems, but the agency noted that search results alone cannot confirm whether individual devices are vulnerable or compromised. CERT-FR advises removing public internet access, reviewing full device configurations, checking defrost schedules, and restoring remote access through secure VPNs or protected networks.
Independent temperature monitoring and prompt staff response were crucial safeguards, though the full technical cause remains unclear.
