According to fuitededonnées.fr, Coolworld, which maintains storage containers for France's blood service EFS, was hit by a cyberattack on November 1, 2026 [1]. Per Le Canard enchaîné, equipment meant to stay around -30°C was reprogrammed to reach 110°C and an on-call technician spotted the rise; the health ministry says there were no operational consequences [1]. fuitededonnées.fr advises following official EFS and hospital communications, and patients due a transfusion can ask their doctor whether the product underwent specific checks [1].
This event has not been officially confirmed. Content is based on media or third-party reports.
HighMonitoringMedia reported
French blood service EFS: freezer maintenance contractor hacked, units reprogrammed to 110°C
1 min read
- Disclosed
- Nov 3, 2026
- Occurred
- Nov 1, 2026
- Published
- Nov 11, 2026
- Last updated
- Nov 11, 2026
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- Our assessment
- Technology
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30-second summary
What happened
Who is affected
Industries mainly affected: Healthcare
Timeline
Technical details
Remediation
Vendor guidance
- 1Follow official notices verify[1]
Follow EFS and hospital notices; ask your doctor before a transfusion.
References
Media1
- [1]fuitededonnées.fr2026-11-03Accessed 2026-11-11Snapshot 2026-11-11 sha256 db9fa8d09825
“Le prestataire Coolworld, qui assure la maintenance de conteneurs de stockage de l'Établissement français du sang (EFS), a été victime d'une cyberattaque le 1er novembre 2026.”
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