high severity June 17, 2025 · 3 min read Unverified claim — what this is

gibGREINER Listed by Sarcoma Ransomware Group

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

gibGREINER Erfahren Sie mehr über das Projekt... Beim Neubau des Flughafens Franz-Josef Strauss in München handelte es sich um ein typisches Standortprojekt, bei welchem eine Vielzahl unterschiedlicher Einzelobjekte des Hoch-/Tief- und Ingenieurbaus in einen flchenmig geschlossenen Projektraum zur Abwicklung gelangten. Bei derartigen Projekten herrscht eine starke Abhngigkeit jedes einzelnen Objektes zum Projektraum, zum Teil basieren deren technische Systeme auf gemeinsamen Ver- und Entsorgungsnetzen. Erfahren Sie mehr über das Projekt... Die Verkehrsprojekte Deutsche Einheit (Schiene) wurden
— from Sarcoma’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.

gibGREINER Listed by Sarcoma Ransomware Group

On June 17, 2025, construction company gibGREINER appeared on the leak site of the sarcoma Ransomware Group after attackers exfiltrated internal files during a ransomware incident. The German firm, known for large-scale infrastructure projects including the Munich Airport expansion and Deutsche Einheit rail initiatives, now faces public exposure of sensitive project documents that could contain employee and subcontractor personal data.

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What Public Reporting Shows

Public reporting indicates the company was listed on the sarcoma leak site with samples of internal files. Available details describe the data as project-related documentation rather than a full customer database. No confirmed victim count has been published, and the precise volume or specific categories of personal information remain unclear from current public sources. The incident follows the typical ransomware pattern of initial access, data theft, and subsequent extortion pressure.

Why This Matters for You and Your Family

When a company that handles major public infrastructure projects is breached, the ripple effects often reach ordinary people. Employee records, subcontractor details, contact information, or even household addresses tied to project sites can surface in follow-on leaks. Internal files exfiltrated in such attacks frequently include scanned contracts, invoices, or correspondence that list full names, dates of birth, addresses, or phone numbers. Once that information escapes controlled environments, it becomes reusable for identity theft, phishing, or harassment targeting you or members of your family.

Children are not immune. Many families use the same email addresses or passwords across work, personal, and gaming accounts. A leak from a parent’s employer can give attackers the starting point they need to target a child’s Roblox, Fortnite, or Steam account linked to the same household.

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What the free scan actually returns

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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 Sarcoma · 141 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed June 17, 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

Sarcoma — 141 incidents tracked

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

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