high severity April 04, 2026 · 4 min read Unverified claim — what this is

Das Labor Listed by The Gentlemen Ransomware Group

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

daslabor.eu is an Austrian private medical and chemical diagnostic laboratory led by Dr. Margit Striednig-Zechner and Dr. Beatrix Sterz. The lab offers a dedicated online ordering system called Cyberlab for referring physicians and healthcare professionals, emphasizing quality-oriented and service-driven care. It is a regional clinical diagnostics practice focused on delivering reliable medical and chemical laboratory testing to local healthcare providers
— from The Gentlemen’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.

Das Labor Listed by The Gentlemen Ransomware Group

On April 4, 2026, the Austrian medical laboratory daslabor.eu appeared on the leak site of the ransomware group known as thegentlemen. The listing indicates that internal files were exfiltrated during a ransomware attack on the private diagnostic facility, which serves referring physicians and healthcare professionals through its Cyberlab online ordering system.

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What Public Reporting Shows

Public reporting indicates the laboratory, formally associated with Dr. Margit Striednig-Zechner and Dr. Beatrix Sterz, was listed exactly on April 4, 2026. The data involved consists of internal files taken during the incident. The number of individuals whose information may have been exposed remains unknown at this time. The laboratory operates as a regional clinical diagnostics provider focused on medical and chemical testing for local healthcare providers in Austria.

Available details come primarily from the group’s own leak site, tracked by ransomware.live at the URL listed in the source note below. No independent confirmation of the exact volume or specific categories of patient or employee data has been released by the laboratory or law enforcement as of this writing.

Why This Matters for You and Your Family

When a medical laboratory’s internal files are stolen, the information inside often includes names, addresses, dates of birth, health test results, insurance details, and contact information for both patients and referring doctors. If your family has ever used a local Austrian diagnostic service or been referred to daslabor.eu for blood work, pathology, or chemical analysis, your records could be among those now held by attackers.

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Report details & sourcing

Attributed to The Gentlemen · 1015 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed April 04, 2026

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.

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The Gentlemen — 1015 incidents tracked

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