.png?width=200&height=78&name=CH%20Diligence%20(thicker%20line).png "CH Diligence (thicker line).png")
Know Your Breach: Bouygues Telecom
Sep 26, 2025 8:17:24 AM
The Target: Bouygues Telecom is one of the largest telecommunication service providers in France, offering mobile, internet, and IPTV services. Bouygues Telecom has 14.5 million mobile subscribers, 9,000 employees, and an annual revenue of €56.8 billion ($66B).
The Take: According to the FAQ, the following customer information was stolen: Contact details; Contract information; Civil status data; Company details (for business customers); International Bank Account Numbers (IBANs).
The Vector: A previous statement says that internal investigations confirmed that the attack was orchestrated by a 'known cybercriminal group' that targeted 'specific internal resources.'
This breach highlights the extreme importance of timely software updates for known software vulnerabilities, not only in systems directly under a firm’s control, but in third-party systems the firm relies upon as well. The longer a firm, or its vendors, hold out on deploying the most up-to-date software for their systems, the greater the chance an attacker will exploit the issue.
