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high severity March 13, 2024 · 4 min read Unverified claim — what this is

geruestbau.com Listed by lockbit3 Ransomware Group

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

We have more than 1TB of company data. These are projects, clients, developments, finances, etc.https://www.teupe.dehttps://www.gesta.deThe Teupe Group is an innovative, medium-sized group of companies with locations in Germany, Austria and Swi...

— 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.
geruestbau.com Listed by lockbit3 Ransomware Group

On March 13, 2024, the construction-services company geruestbau.com appeared on the LockBit 3.0 ransomware leak site with the claim that attackers had taken more than 1 TB of internal files. The listing, hosted on the LockBit 3.0 onion portal and mirrored on ransomware.live, states that the stolen material includes projects, clients, developments, and finances. It also names two related entities — teupe.de and gesta.de — as part of the Teupe Group, a medium-sized operation with offices in Germany, Austria, and Switzerland. Anyone whose personal or business records passed through these companies is now at risk of exposure.

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Primary Disclosure Details

The LockBit 3.0 leak page explicitly lists geruestbau.com and asserts that more than 1 TB of company data was exfiltrated during a ransomware incident. The posting does not quantify the number of affected individuals and does not itemize every file type beyond the broad categories of projects, clients, developments, and finances. It provides no exact date of initial compromise or ransom demand amount. The disclosure remains active on the onion site, indicating that the extortion window has not closed. Public mirrors state the listing has not been edited or removed since its March 13 appearance.

Why This Matters for You and Your Family

When construction firms suffer breaches, the data often contains names, addresses, dates of birth, bank details, project contracts, and correspondence belonging to employees, subcontractors, and clients. Even if you never visited geruestbau.com, your information may have been shared during routine business — invoices, insurance forms, employment records, or vendor agreements. Once that material leaves the company’s control, it can surface on dark-web markets, fraud forums, or in targeted phishing campaigns. Your family’s financial stability and personal safety depend on how quickly you understand the exposure and limit further damage.

Doxxing and Identity-Chain Risks

Construction-sector leaks frequently create long identity chains. A single leaked email or phone number tied to a project file can be correlated with social-media handles, gaming accounts, and family-member records. Attackers then map these connections to build convincing spear-phishing lures or to impersonate you when contacting banks and government agencies. Credential leaks of this kind regularly cascade into account takeovers on personal email, cloud storage, and gaming platforms. Children’s gaming accounts are especially vulnerable because they often reuse the same passwords or recovery emails that appear in parent-company documents. The result is a widening circle of doxxing that can expose home addresses, family photos, and financial habits.

LockBit 3.0 Track Record

Public reporting attributes LockBit 3.0 as the current iteration of a ransomware operation that first appeared in 2019 under the original LockBit name. The group rebranded to LockBit 2.0 in 2021 and to LockBit 3.0 in 2022 after releasing new encryptors and a bug-bounty program for affiliates. Notable prior victims include numerous European manufacturing and logistics firms as well as healthcare providers and local governments. Their typical playbook begins with initial access gained through compromised remote-desktop credentials or phishing, followed by rapid lateral movement, data exfiltration, and deployment of ransomware. After encryption they publish a sample of stolen files on their leak site and demand payment within a short deadline, threatening full publication or sale of the remaining archive. The group routinely updates its tooling and maintains a public-facing “support” presence to recruit new affiliates.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity so you can see exactly what chains back to the Teupe Group breach.
  • Rotate any password you used at geruestbau.com, teupe.de, or gesta.de and enable 2FA through an authenticator app on every account where that credential was reused.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next leak exposing your data is caught in hours rather than months.
  • Cover the household with DoxxScan family protection that extends to dependents and children’s gaming accounts, which often become the weakest link in these identity chains.
  • Let remediation specialists handle data-broker takedown requests and follow-up correspondence so you do not have to chase every instance of your information manually.

The Teupe Group breach is a reminder that even mid-sized regional companies can become gateways to widespread personal exposure. Acting promptly on the signals published by LockBit 3.0 gives you the best chance to shrink that exposure before fraudsters exploit it. Start your DoxxScan trial today; its continuous monitoring, AI-powered identity-chain mapping, hands-on remediation by specialists, and full household coverage — including children’s gaming accounts — provide the practical defense ordinary families need when corporate data leaves the building.

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.

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geruestbau.com is one listing. Your email is probably in others.
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Report details & sourcing

Severity High the filing does not enumerate what was exposed
Disclosed March 13, 2024
Last reviewed August 8, 2026
Affected Unconfirmed
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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