Bouygues Telecom
HIGH RISKData breach — August 2025
In August 2025, the French telecommunications company Bouygues Telecom detected a cyber attack against their services. The incident resulted in a data breach that exposed almost 6.4M customer records, including 5.7M unique email addresses. The breach also exposed names, physical addresses, phone numbers, dates of birth and IBANs (International Bank Account Numbers). Bouygues Telecom advised that all affected customers had been notified about the incident.
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What happened in the Bouygues Telecom data breach?
In August 2025, the French telecommunications company Bouygues Telecom detected a cyber attack against their services. The incident resulted in a data breach that exposed almost 6.4M customer records, including 5.7M unique email addresses. The breach also exposed names, physical addresses, phone numbers, dates of birth and IBANs (International Bank Account Numbers). Bouygues Telecom advised that all affected customers had been notified about the incident.
The exposed data included 6 types of personal information. Financial data was included, making this breach especially dangerous for affected users. Learn more about what a data breach means for you.
Quick answer — was Bouygues Telecom hacked?
Yes. Bouygues Telecom was breached in August 2025. The breach exposed 5,685,771 records including bank account numbers, dates of birth, email addresses. This breach has been independently verified. If your email was involved, your data may still be at risk today. Check if you were affected.
Why was the Bouygues Telecom breach so dangerous?
The Bouygues Telecom breach exposed 5,685,771 records — that is 5.7M people whose personal data is now circulating on the dark web. The combination of bank account numbers, dates of birth, email addresses makes this a high-risk breach that requires immediate action.
Don't wait to find out — check if your email was exposed in this breach now.
What data was stolen in the Bouygues Telecom breach?
Bank account numbers — can be used for direct financial fraud and unauthorised transactions
Dates of birth — used to verify identity for account takeover and fraud
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Names — used to build profiles and target you with personalised scams
Phone numbers — enables SIM swapping attacks and targeted SMS phishing scams
Physical addresses — combined with other data, used for identity theft and physical fraud
Is the Bouygues Telecom breach still dangerous in 2026?
Yes. Stolen data from the Bouygues Telecom breach remains dangerous years after the incident. Research shows that over 65% of stolen credentials from older breaches have never been changed by the account holders. Attackers routinely compile data from multiple breaches to build complete profiles, and credentials from 2025 are still actively used in credential stuffing attacks today.
Personal information like email addresses, phone numbers, and dates of birth never expire. Even if you changed your Bouygues Telecom password, the other exposed data can be combined with information from other breaches to target you. Learn more about how long stolen data stays dangerous.
Frequently asked about the Bouygues Telecom breach
Approximately 5,685,771 user records were exposed in the Bouygues Telecom breach in August 2025.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your Bouygues Telecom password elsewhere and haven't changed it, those accounts remain at risk today.
Enter your email in the free checker on EmailLeaked. We scan 12 billion+ breach records including the full Bouygues Telecom dataset and tell you instantly whether your email was exposed and what data was taken.
Change your Bouygues Telecom password immediately, change any other account where you used the same password, enable two-factor authentication on all important accounts, and monitor for phishing emails over the next 90 days.
Who was affected by the Bouygues Telecom breach?
The Bouygues Telecom data breach affected approximately 5,685,771 users who had accounts with the service. While not the largest breach on record, it still represents a significant number of compromised accounts in our database of 970+ known breaches.
If you ever created an account with Bouygues Telecom or used their services, your data may have been included in this breach. Check your email now to find out. You can also read our guide on what to do immediately after a data breach.
If your email was in the Bouygues Telecom breach
Change your Bouygues Telecom password immediately
Go to Bouygues Telecom and change your password right now. Use a strong, unique password that you have never used anywhere else.
Change any account sharing that password
If you used the same password on other sites, change it on every one of them. Attackers test stolen credentials on hundreds of popular sites within hours.
Enable two-factor authentication
Turn on 2FA on Bouygues Telecom and every important account. Even if your password is known, attackers cannot get in without the second factor.
Check your other accounts for this breach
Run a full email check to see every breach your email appears in — not just this one.
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