high severity August 31, 2023 · 3 min read Unverified claim — what this is

biso.at Listed by lockbit3 Ransomware Group

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

BISO GmbHThe development of BISO harvesting solutions can be compared to the car tuning: the combine manufacturer supplies a solid base machine
— from LockBit’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.

biso.at Listed by lockbit3 Ransomware Group

BISO GmbH was listed on the LockBit 3.0 leak site on August 31, 2023, after the ransomware group claimed to have exfiltrated internal files from the Austrian company during a ransomware attack. The listing indicates that anyone whose personal or business data appears in those files now faces heightened risk of identity theft, account takeover, and targeted fraud. If you or your family had dealings with BISO, this claimed breach directly concerns you.

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What's Publicly Reported from the Listing

The LockBit 3.0 leak site states that BISO GmbH suffered a ransomware attack in which internal files were exfiltrated. The disclosure does not quantify how many records were taken, list specific data types beyond “internal files,” or name any deadlines for ransom payment. The primary source, hosted on the LockBit infrastructure and mirrored on ransomware.live, simply states the company was hit and that stolen data is available for download by other criminals. No official breach notification from BISO itself had appeared at the time of the listing.

Why This Matters for You and Your Family

When a company like BISO loses control of internal files, the information inside often includes names, addresses, contact details, dates of birth, financial records, or correspondence that can be used to impersonate you. Internal files exfiltrated in ransomware incidents frequently contain employee data, customer contracts, invoices, or partner information. For ordinary people, this translates into concrete risks: unexpected tax fraud, loan applications in your name, or phishing emails crafted from real details only BISO would know. Your family members listed on shared accounts or household documents are equally exposed even if they never directly interacted with the firm.

The Doxxing and Identity-Chain Implications

Stolen internal files rarely stay isolated. Criminals cross-reference names, email addresses, and phone numbers found in one breach against dozens of other leaks, rapidly building a complete profile. A single leaked document can link your work email to personal accounts, home address, children’s names, or even gaming usernames. Once these connections surface on underground forums, the risk of doxxing, swatting, or systematic account takeover grows quickly. Credential leaks of this nature routinely cascade into gaming account compromises, where children’s profiles become entry points for further harassment or extortion because the same password or recovery email was reused.

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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 LockBit · 3412 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed August 31, 2023

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

LockBit — 3412 incidents tracked

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

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