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low severity November 13, 2025 · 3 min read

Eurofiber Data Breach (2025)

If you are a customer of Eurofiber, here’s what’s now in circulation.

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.

Eurofiber Data Breach (2025)

On November 13, 2025, Eurofiber France disclosed a breach of its ticket management platform that exposed email addresses, names, and phone numbers belonging to roughly 10,000 people. The data was later leaked online, and the threat actor behind the incident claims to hold additional sensitive material including VPN configuration files, credentials, source code, certificates, and SQL backups.

Named in this incident?
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What's Publicly Reported from Reporting

Public reporting indicates the breach originated in Eurofiber’s customer support ticketing system. The confirmed dataset contains 10,000 unique email addresses along with a smaller volume of names and phone numbers. The threat actor has published this initial batch and states that a larger cache of internal files was also taken, though those additional items have not been independently verified in the public leak.

Have I Been Pwned lists the incident and confirms the exposure of contact details. No evidence has surfaced so far showing that the more sensitive alleged material—VPN configs, credentials, or database backups—has been released.

Why This Matters for You and Your Family

When a company that handles your support tickets loses your email, name, and phone number, those details become building blocks for more targeted attacks. Scammers can combine them with information from other breaches to impersonate you, attempt account takeovers, or launch convincing phishing campaigns against your family.

Phone numbers and names are especially useful for SIM-swapping attempts or for social engineers who call family members pretending to be you. Even a modest breach like this one can quietly feed larger identity theft operations that unfold over months.

The Doxxing and Identity-Chain Risks

Once your email or phone appears in a leak, attackers often map it to your usernames on gaming platforms, social media, and other services. That process, known as identity-chain mapping, can link an anonymous gaming handle back to your real name and home address. The result is doxxing that exposes you and your children to harassment, stalking, or further extortion.

Credential leaks like this one frequently cascade into gaming account takeovers. Children’s accounts are frequent targets because they often reuse passwords or share devices, turning a corporate breach into a direct threat to family safety.

What to Do

  • Run a DoxxScan to map every link between your emails, phone numbers, handles, and real identity, then use the cleanup to break those chains.
  • Rotate any password you used on Eurofiber’s platform wherever it has been reused, and switch to 2FA through an authenticator app instead of SMS.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next leak that touches your family is caught in hours rather than months.
  • Cover the household with DoxxScan family protection, which extends to dependents and children’s gaming accounts that can be traced back to the same contact details.
  • Let remediation specialists handle takedown requests across data brokers and exposed records while you focus on securing your own accounts.

The incident shows that even a seemingly limited breach can supply the first link in a chain that leads to doxxing or account takeovers. Acting quickly on the exposed contact information and establishing ongoing visibility is the most practical defense for ordinary families. DoxxScan by GalaxyWarden delivers that visibility through continuous monitoring across 13.1 billion+ breach records and more than 100 platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and household coverage that includes children’s gaming accounts.

What the free scan actually returns

Sample resultyou@email.comIllustrative — not a real person

Found on people-search siteswe remove these

These listings are live, public, and legal to remove — and removing them is what we do.

value redacted in this sampleage, relatives, address historySpokeo
value redacted in this samplephone, household, property recordsBeenVerified
value redacted in this sample582 companies checked

Found in breach recordsverifiedreported — unverified

Each record is labeled: confirmed breach data, or an attacker’s claim no one has verified.

verifiedvalue redacted in this samplepassword + phone · 2024telecom breach
unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

Leaked data cannot be deleted from the internet — anyone claiming otherwise is lying. Broker listings can be removed. We do the second, and show you exactly what to fix from the first.

Were you a Eurofiber customer?
Eurofiber is one listing. Your email is probably in others.
10K accounts were exposed here. Check whether yours is one — and find every other leak tied to the same address, in about 15 seconds. No account, no card.

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Report details & sourcing

Severity Low contact details only, none of them permanent
Disclosed November 13, 2025
Last reviewed July 22, 2026
Affected 10K
Data exposed Email addressesNamesPhone numbers
Editorial & sourcing policy
GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.
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