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Eurofiber France Confirms Data Breach Following Cyberattack

First seen 2 Dec 2025, 18:33 UTC • Thecyberexpress

•87% similarity •16.4

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Eurofiber France reported a data breach after hackers accessed its ticket management system on November 13, 2025, exploiting a software vulnerability. The breach affected the company's internal systems and involved the exfiltration of customer data. Eurofiber has since secured its systems and implemented additional protective measures.

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Attack Flow

14 entities, 13 inferred relationships (STIX 2.1).

Technique (4)

Data Breach
DDoS
Ransomware
Sql Injection

Organization (7)

Bouygues Telecom
Colt
Eurofiber
Eurofiber France
Eurofiber France SAS
ICUK
Orange France

Affected Platform (2)

ATE Portal
GLPI

Threat Actor (1)

Warlock

Relationships

Warlock uses Data Breach
Warlock uses DDoS
Warlock uses Ransomware
Warlock uses Sql Injection
Warlock targets Bouygues Telecom
Warlock targets Colt
Warlock targets Eurofiber
Warlock targets Eurofiber France
Warlock related to Eurofiber France SAS
Warlock related to ICUK
Warlock related to Orange France
Warlock related to ATE Portal
Warlock related to GLPI

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Tracked Entities in This Story

Warlock Bouygues Telecom Colt Eurofiber Eurofiber France Eurofiber France SAS ICUK ATE Portal GLPI Telecommunications Data Breach DDoS Ransomware Sql Injection

Eurofiber France Confirms Data Breach Following Cyberattack

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