Bouygues Telecom

Disclosed Aug 6, 20256,400,000 affectedConfirmed

Cyberattack exposes data of 6.4 million Bouygues Telecom accounts

Bouygues Telecom detected a cyberattack on August 4, 2025 that exposed personal data on 6.4 million customer accounts, including contact and contract data, civil status and IBANs; it reported the breach to CNIL.

What is known

People affected	6,400,000 (as reported by the organization)
Disclosed	Aug 6, 2025
Discovered	Aug 4, 2025
Happened	Aug 4, 2025
Attack	Hacking
Data exposed	FinancialDates of birthEmailsNamesPhone numbersAddressesOther
Sector	Telecom · FR
Status	Confirmed
Check your email	Have I Been Pwned

Sources

Aggregatorhaveibeenpwned.com

Have I Been Pwned: Bouygues Telecom

The organizationcorporate.bouyguestelecom.fr

Bouygues Telecom disclosure

Newstechcrunch.com

Data breach at French telecom giant Bouygues affects millions of customers

Newsbleepingcomputer.com

Bouygues Telecom confirms data breach impacting 6.4 million customers

Notices filed

TotalAug 6, 2025

Research6,400,000 people

Accounts in the dataSep 24, 2025

Have I Been Pwned5,685,771 people

History of this record

source_type2026-09-25

aggregator to pressby seedSource

source_url2026-09-25

https://haveibeenpwned.com/Breach/BouyguesTelecom to https://techcrunch.com/2025/08/07/data-breach-at-french-telecom-giant-bouygues-affects-millions-of-customers/by seedSource

country2026-09-25

empty to FRby seedSource

data_types2026-09-25

["financial","dob","emails","names","phone","addresses"] to ["financial","dob","emails","names","phone","addresses","other"]by seedSource

records_basis2026-09-25

hibp to organizationby seedSource

records2026-09-25

5685771 to 6400000by seedSource

disclosed2026-09-25

2025-09-24 to 2025-08-06by seedSource

discovered2026-09-25

empty to 2025-08-04by seedSource

summary2026-09-25

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. to Bouygues Telecom detected a cyberattack on August 4, 2025 that exposed personal data on 6.4 million customer accounts, including contact and contract data, civil status and IBANs; it reported the breach to CNIL.by seedSource

title2026-09-25

empty to Cyberattack exposes data of 6.4 million Bouygues Telecom accountsby seedSource

Added2026-09-25

First recordedby backfillSource

First seen 2026-09-25 (Have I Been Pwned), confirmed by Company page. Record counts are as reported. Not legal advice.

Everything about Bouygues Telecom