Organization
CNIL
France's data-protection authority and the notified regulator for Bouygues Telecom's August 2025 customer-data breach.
What to know first
- IdentityCNIL, Government agency, Government bodyHigh confidence
- People and linksUnavailable: Bouygues Telecom, Policy, Bouygues breach exposes telecom data risks, Bouygues Telecom breach exposes 6.4 million customer accountsMedium confidence
Basic information
- Display nameCNILHigh confidence
- Legal typeGovernment agencyHigh confidence
- Directory categoryGovernment bodyHigh confidence
- AliasesCommission Nationale de l'Informatique et des Libertes, France data protection authority, French Data Protection AuthorityMedium confidence
- Last updatedAug 28, 2026High confidence
Locations
- Geography scopeFranceHigh confidence
- Other infrastructure servicesFranceMedium confidence
Other network resources
- Service platformCNIL France Other infrastructure services · FranceHigh confidence
People and contacts
- ContactsPolicyMedium confidence
- Available contact typesPolicyMedium confidence
Source basis
- Bouygues Telecom press release on August 2025 cyberattackBouygues Telecom disclosed on August 6, 2025 that a cyberattack allowed unauthorized access to personal data tied to 6.4 million customer accounts, said the situation was resolved, notified CNIL, filed a judicial complaint and began informing affected customers by email or SMS.High confidence
- Bouygues Telecom FAQ on breach data categories and customer riskBouygues Telecom said it detected the attack on August 4, contained it quickly, notified CNIL and judicial authorities, and that the affected data included contact, contract, civil-status or company data and IBANs while passwords and card numbers were not impacted.High confidence
- CNIL telecom-sector data-breach notification frameworkCNIL says French public electronic-communications service providers must notify personal-data breaches to CNIL and, in some cases, affected people; the CNIL page describes unauthorized access to personal data as a covered violation when linked to telecom service activity.High confidence
- Bouygues Telecom official key figuresBouygues Telecom's official key figures support its scale as a major French fixed and mobile operator, including 27.1 million mobile customers at year-end 2025 and 5.5 million fixed customers at March 31, 2026.High confidence
- BleepingComputer report on Bouygues Telecom data breachBleepingComputer independently reported the 6.4 million-account exposure, the affected data categories, the absence of exposed card numbers or passwords, customer fraud risk and the unresolved uncertainty around attacker identity and misuse.High confidence