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Eurofiber France Data Breach Affects Major Corporations

Eurofiber France Data Breach Affects Major Corporations

First seen 2 Dec 2025, 18:33 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 13:27 UTC

Eurofiber France has confirmed a significant data breach linked to the ransomware group ByteToBreach. The breach reportedly impacts major clients including Airbus, Thales, Orange, and Decathlon, with sensitive corporate data believed to be circulating on the darknet. The company is collaborating with cybersecurity experts to analyze the incident and enhance security measures.

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