Hackers raise temperatures in French blood bank cold stores

French blood banks were hit by a cyber‑attack that raised temperatures in three cold stores, the Guardian reported.

The French national blood service said hackers accessed the control systems and boosted temperatures at the facilities that store vital blood products. It added that temperature and defrosting thresholds had been raised to “very high levels” during the intrusion.

According to the service, its alarm systems alerted technicians, who were able to intervene before the blood products were compromised. The incident follows a series of recent cyber‑attacks on refrigeration units across Europe, suggesting an escalating focus on medical supply chains.

Authorities are assessing the impact on the blood supply while reviewing security measures for critical storage infrastructure.

Why it matters

The attack threatens the safety of blood supplies and highlights growing cyber risks to essential health‑care infrastructure.

Key details

Location

France · Europe

Reported by

The Guardian

First reported

4 Nov 2026, 18:52 IST

Key names

French, Europe, EFS

Section

Technology

Sources

This is an independent summary. Read the full, original reporting from the publisher:

• The GuardianFrench blood banks hacked in latest cyber-attack on Europe 4 Nov, 18:52

Read the full story at The Guardian ↗

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