BT

Confirmed breach

Bouygues Telecom data breach

FRFrance · bouyguestelecom.fr

A breach of Bouygues Telecom (France) was added to Have I Been Pwned’s breach database on 24 September 2025. It affected 5,685,771 accounts. Exposed: Financial account and card details, Email addresses, Phone numbers, Dates of birth, Names and Addresses. The breach began on 4 August 2025, 51 days before it was reported.

Status

Confirmed breach

People affected

5,685,771 accounts

Reported

24 September 2025

Breach began

4 August 2025

Time to tell

51 days (the median in California’s notices over the last year: 154 days)

What was exposed

• Financial account and card details
• Email addresses
• Phone numbers
• Dates of birth
• Names
• Addresses

Sources

• Breach database · 24 September 2025 · 5,685,771 accountsHave I Been Pwned

Breach databases are read by code. · Corrections and changes

If Bouygues Telecom had your data

1. Look for Bouygues Telecom’s own notice or letter: it should say what of yours was involved. Keep it.
2. Call your bank on the number printed on your card (never one from a message), check recent payments and ask for a new card.
3. Expect scams that use your details: calls, texts or emails pretending to be Bouygues Telecom, your bank or the police. Never give codes or passwords, never approve a sign-in you did not start, never move money.

• Spot the scams that use leaked data →
• If your card or bank details leaked →
• What to do after a data breach →

Email me if Bouygues Telecom has another breach

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1. CD Communauté de communes des Portes du BerryreportedFRFrance · 28 October 2026 Civil status recordsPersonal coordinatesUrbanization files+2 –not reported
2. E ENGIEFRFrance · 24 October 2026 Customer dataPersonal data –not reported
3. AP Alliance Police NationalereportedFRFrance · 24 October 2026 Data –not reported
4. PC Parti communiste françaisreportedFRFrance · 23 October 2026 Email addressesPhone numbersNames+2 190Kmembers
5. FF Fédération française de tirreportedFRFrance · 23 October 2026 –not reported

Every breach in France →

From the data breach tracker: official notices, breach databases and the news, every fact with its source. Open data (CC BY 4.0) · How the tracker works · Official registers · Corrections and changes · Found a mistake? Tell us and we correct it.