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high severity April 09, 2023 · 3 min read Unverified claim — what this is

Baur Hausverwaltung Listed by malas Ransomware Group

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

Baur Hausverwaltung was listed on Malas's leak site. Malas claims to have stolen internal data. This is the group's claim, not a confirmed finding.

Baur Hausverwaltung Listed by malas Ransomware Group

On April 09, 2023, German property management company Baur Hausverwaltung appeared on the leak site of the malas ransomware group. The listing states that internal files were exfiltrated during a ransomware attack that leveraged a Zimbra vulnerability. The number of people whose data was taken remains unknown, and the leak-site posting does not detail the specific documents or personal records involved.

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Reported Details from the Listing

The malas leak site entry, still accessible via the .onion link tracked by ransomware.live, claims the company failed to meet the group’s demands. It states the initial access vector was a Zimbra collaboration suite vulnerability and that attackers successfully exfiltrated internal files before encryption. No exact volume of records or list of exposed data types is provided in the primary disclosure. The posting follows the group’s standard format of naming the victim, showing sample screenshots, and threatening further publication if payment is not received.

Why This Matters for You and Your Family

When a property management firm suffers a breach, the people most directly affected are tenants, landlords, and anyone whose personal information flows through the company’s systems. Rental agreements, bank details, tax records, identification documents, and correspondence can all sit inside the “internal files” now in criminal hands. Even though the exact contents are not public, the disclosure indicates that sensitive personal and financial information tied to ordinary households was placed at risk. If your landlord or property manager uses Baur Hausverwaltung, your data may have been exposed in this incident.

Doxxing and Identity-Chain Risks

Ransomware operators rarely stop at encryption. Once internal files leave the victim’s network they are sorted for any information that can be used to pressure payment or sold on the side. A single leaked rental contract can link your full name, current address, phone number, email, date of birth, and sometimes bank account details. These fragments become the starting point for larger doxxing chains. Attackers or buyers can cross-reference the data with other breaches, gaming accounts, or social-media handles to build a complete profile. Credential leaks of this kind frequently cascade into account takeovers on personal email, banking portals, or children’s gaming platforms that reuse the same passwords.

The Malas Ransomware Group’s Track Record

Public reporting attributes the malas group’s first notable activity to late 2022. The operators focus on small and mid-sized businesses across Europe, often exploiting unpatched email and collaboration software such as Zimbra. Their typical playbook involves initial access through known vulnerabilities, rapid exfiltration of documents, followed by double-extortion: encryption of systems combined with public leak-site pressure. Notable prior victims have included other property-management firms and service providers whose client data carried similar personal exposure. The group maintains a relatively low public profile compared with larger ransomware operations but consistently follows through on publishing stolen files when ransom is not paid.

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 this claimed breach.
  • Rotate any password you used at Baur Hausverwaltung or any related property portal anywhere it has been reused, and switch on 2FA through an authenticator app rather than SMS.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next time your information surfaces you learn within hours instead of months.
  • Cover the household with DoxxScan family protection that extends to dependents and children’s gaming accounts which often become the next link in an identity theft chain.
  • Let remediation specialists handle data-broker takedown requests and opt-out processes that would otherwise consume hundreds of hours of your own time.

The Baur Hausverwaltung breach is a reminder that even routine business relationships can expose your family’s most personal details without warning. Staying ahead requires more than reactive checks; it demands ongoing visibility and expert help when data surfaces on criminal forums. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1 billion+ breach records and over 100 platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and full household coverage that includes children’s gaming accounts at risk from cascading credential leaks.

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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Report details & sourcing

Severity High
Disclosed April 09, 2023
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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