high severity October 01, 2025 · 3 min read Unverified claim — what this is

Lugand Aciers Listed by Sinobi Ransomware Group

If you are a customer of Lugand Aciers, here’s what is being claimed, and what it would mean for you.

The Oyonnax-based company, headed by Mr. Didier Lugand, grandson of the founder, is present in 5 countries and includes 4 production sites. Its proximity to European players in the plastics and mechanical engineering sectors is the guiding principle of its development.
— from Sinobi’s own leak-site posting. This is the group’s claim, quoted verbatim; it is not GalaxyWarden’s reporting and has not been independently verified.

Lugand Aciers Listed by Sinobi Ransomware Group

On October 1, 2025, French steel manufacturer Lugand Aciers appeared on the leak site of the sinobi ransomware group, with internal files reportedly exfiltrated during a ransomware attack now publicly listed.

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Reported Details of the Incident

Public reporting indicates the company, based in Oyonnax and led by Mr. Didier Lugand, grandson of the founder, operates across five countries with four production sites. The breach involved exfiltration of internal files, though the exact volume and specific data types remain unclear from available reporting. Ransomware.live tracked the listing on the sinobi leak site, which serves as the group’s public shaming platform for victims who do not pay.

October 1, 2025 marks the public disclosure date. No confirmed victim count for individuals has been released, and the company has not issued a detailed public statement on precisely which records were taken.

Why This Matters for You and Your Family

When a company like Lugand Aciers suffers a ransomware breach, the information inside its files can include employee records, customer details, supplier contracts, and correspondence that contain personal data. If your employer, your vendor, or a business you deal with appears in such leaks, your name, address, phone number, email, or financial details may now sit in criminal hands. These exposures rarely stay isolated. One leak frequently fuels the next.

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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 sample580 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.

Report details & sourcing

Attributed to Sinobi · 274 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed October 01, 2025

Last reviewed August 8, 2026

Affected Unconfirmed

By GalaxyWarden Threat Research · Editorial & sourcing standards

Unverified claim — what this report is

This page documents a public listing on a ransomware/extortion group’s leak site, tracked via public threat-intelligence sources. A listing is the attacker’s claim. GalaxyWarden aggregates and reports such claims; we have not independently verified that a breach occurred, what data (if any) was taken, or the accuracy of anything the group asserts, and the named organisation has not necessarily confirmed the incident. Sections above describe what the listing shows and the group’s documented history — not verified findings about the named organisation. If you represent this organisation and believe anything here is inaccurate, tell us and we’ll review it promptly.

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.

Threat-actor tracker

Sinobi — 274 incidents tracked

Every breach we've attributed to Sinobi, in one running log. See who else they've hit →

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