Eurofiber Data Breach Data Breach

In November 2025, Eurofiber France disclosed a data breach of its ticket management platform. Data containing 10k unique email addresses and a smaller number of names and phone numbers was subsequently leaked. A threat actor claiming responsibility for the breach alleges to have additional, more sensitive data including screenshots, VPN configuration files, credentials, source code, certificates, archives, and SQL backup files.

What Happened

In November 2025, Eurofiber France disclosed a data breach of its ticket management platform. Data containing 10k unique email addresses and a smaller number of names and phone numbers was subsequently leaked. A threat actor claiming responsibility for the breach alleges to have additional, more sensitive data including screenshots, VPN configuration files, credentials, source code, certificates, archives, and SQL backup files.

What Data Was Exposed

Who Is Affected

Anyone who had an account with Eurofiber before November 2025 may be affected. The breach exposed 10K records.

How to Check If You Were Affected

Visit haveibeenpwned.com and enter your email address to check if you were included in this breach.

What You Should Do Now

1. Watch for phishing emails. Scammers may use your leaked email to send targeted phishing attempts. Be extra cautious of unexpected emails.
2. Be wary of suspicious calls/texts. Your phone number may be used for smishing or vishing attacks.
3. Enable two-factor authentication. Add 2FA to your accounts wherever possible for extra security.
4. Consider identity monitoring. A monitoring service can alert you to suspicious activity.

Last updated: January 13, 2026