Bouygues Telecom warns it suffered a data breach after the private info of 6.4 million prospects was uncovered in a cyberattack.
The corporate is without doubt one of the largest telecommunication service suppliers in France, providing cellular, web, and IPTV providers. Bouygues Telecom has 14.5 million cellular subscribers, 9,000 workers, and an annual income of €56.8 billion ($66B).
Bouygues Telecom confirmed in a FAQ and a press assertion that the assault occurred final Sunday, August 4, 2025.
Though Bouygues Telecom says that there was no impression noticed on buyer providers or networks, the private knowledge of 6.4 million prospects was compromised.
“Bouygues Telecom was the sufferer of a cyberattack that allowed unauthorized entry to sure private knowledge from 6.4 million buyer account,” reads the translated press assertion.
“The state of affairs was resolved as rapidly as potential by Bouygues Telecom’s technical groups, and all mandatory extra measures have been carried out.”
A earlier assertion says that inside investigations confirmed that the assault was orchestrated by a ‘recognized cybercriminal group’ that focused ‘particular inside assets.’
The agency knowledgeable the French Nationwide Cybersecurity Company (ANSSI) and the CNIL (French knowledge safety authority) accordingly, noting that the perpetrator might resist 5 years of imprisonment and a €150,000 high quality for this assault.
In line with the FAQ, the next buyer info was stolen:
- Contact particulars
- Contract info
- Civil standing knowledge
- Firm particulars (for enterprise prospects)
- Worldwide Financial institution Account Numbers (IBANs)
Importantly, the corporate mentioned that no bank card numbers or Bouygues Telecom account passwords had been compromised.
The corporate has now blocked the attacker’s entry to its community, elevated monitoring, and carried out extra security measures.
Prospects are being knowledgeable of the breach immediately by way of SMS and electronic mail, however the state of affairs has uncovered them to fraud and phishing dangers.
Bouygues Telecom urges its prospects to not give away delicate info like their login credentials to individuals calling them and mentioning their identify and account quantity to achieve their belief.
Though the leaked IBANs usually are not sufficient for preliminary transfers, impacted people are nonetheless suggested to recurrently verify their debits and call their financial institution instantly in the event that they discover suspicious exercise.
Simply final week, one other French telecommunications large, Orange, disclosed an analogous community breach that occurred on July 25, 2025.
Investigations to find out whether or not buyer knowledge was stolen are nonetheless ongoing, and the corporate has not revealed an replace on this.
These incidents concentrating on European telecom suppliers echo related assaults towards U.S.-based telcos, attributed to Chinese language cyber-espionage brokers of the Salt Storm hacking group.
BleepingComputer contacted Bouygues Teleco with questions in regards to the assault and can replace the story if we obtain a response.
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