Eurofiber France experienced a cybersecurity breach through a software vulnerability, leading to data exfiltration from its ticket management and ATE portals. The company has secured systems, notified authorities, and increased protective measures, with ongoing investigations revealing extensive potential data exposure. #EurofiberFrance #ByteToBreach
Keypoints
- Unauthorized activity was detected on Eurofiber France’s platforms on November 13, 2025.
- The attacker exploited a software vulnerability to access customer data and support tickets.
- Eurofiber promptly patched the vulnerability and reinforced security measures to contain the breach.
- Approximately 3,600 customers’ data, including passwords and support tickets, may have been exposed.
- Authorities were notified, and the threat actor, “ByteToBreach,” reportedly attempted extortion with no response from the company.
Read More: https://thecyberexpress.com/cybersecurity-incident-at-eurofiber-france/