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high severity February 14, 2024 · 3 min read Unverified claim — what this is

haas4.com Listed by blackbasta Ransomware Group

If you are a customer of haas4.com, here’s what is being claimed, and what it would mean for you.

haas4.com was listed on Blackbasta's leak site. Blackbasta claims to have stolen internal data. This is the group's claim, not a confirmed finding.

haas4.com Listed by blackbasta Ransomware Group

On February 14, 2024, the ransomware group Black Basta added haas4.com to its public leak site, claiming that the Wisconsin-based concrete, aggregate, excavation and trucking company Haas Inc. had been hit by a ransomware attack. The listing states that roughly 498 GB of internal files were exfiltrated. Anyone whose personal information appears in those files — employees, their spouses, dependents, or even customers whose records were stored on the company systems — now faces real exposure.

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Reported Details from the Listing

The Black Basta leak-site entry for haas4.com explicitly lists four categories of stolen material: company data, personal employee data, projects, and confidential documents. The disclosure does not quantify the exact number of individuals affected, nor does it itemize every file type. It simply states that the data was taken during a ransomware intrusion and is now hosted on the group’s onion site. The primary source, accessed via ransomware.live mirrors, shows the initial publication date of February 14, 2024, and warns that the files will be released if demands are not met.

Why This Matters for You and Your Family

When a regional employer like Haas Inc. loses control of employee records, the impact lands directly on households in Central Wisconsin and anyone whose information was stored in those systems. Personal employee data commonly includes Social Security numbers, home addresses, dates of birth, direct-deposit banking details, and dependent information. Once that material sits on a ransomware leak site, it becomes accessible to identity thieves, fraudsters, and stalkers who routinely scan these portals. Your family’s financial stability, credit profile, and physical safety can be affected even if you never worked there — a spouse’s or child’s record is often bundled in the same archive.

The Doxxing and Identity-Chain Risk

Ransomware operators like Black Basta do not simply publish random files. They understand that one leaked email or phone number can be chained to usernames on social media, gaming platforms, and shopping accounts. That linkage turns a corporate breach into persistent personal doxxing. A home address tied to an employee ID can surface in public records aggregators within days. Children’s names or school-related documents, sometimes stored in benefits files, can lead to gaming-account takeovers that expose chat logs, friend lists, and further personal details. These identity chains grow quietly until someone uses them for targeted fraud, harassment, or physical threats.

Black Basta’s Known Track Record

Public reporting attributes Black Basta’s first major appearances to early 2022. The group has since hit hospitals, manufacturers, schools, and local governments across North America and Europe. Its typical playbook begins with initial access gained through phishing, compromised remote desktop credentials, or exploited vulnerabilities. Once inside, operators exfiltrate data before deploying ransomware that encrypts systems. They then pressure victims with dual extortion: payment to decrypt files plus silence on the stolen information. The leak site is used as both proof of compromise and a countdown clock. While the exact success rate is unknown, the group’s continued operation into 2024 shows the tactic remains effective.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, then use the cleanup to remove what you can.
  • Rotate any password you ever used at Haas Inc. or haas4.com wherever it has been reused, and switch on 2FA through an authenticator app rather than text messages.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next exposure surfaces in 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 doxxing chains after credential leaks like this one.
  • Let DoxxScan remediation specialists handle data-broker takedown requests and persistent exposure points that require repeated manual effort.

The breach of Haas Inc. is a reminder that regional businesses hold sensitive details on ordinary families, and those details can appear on leak sites without warning. Staying ahead requires more than checking one breach list; it demands ongoing visibility and active cleanup. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1 billion+ breach records and more than 100 platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and full household coverage that includes children’s gaming accounts. Start your DoxxScan trial today to close the gaps this incident has opened.

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 the filing does not enumerate what was exposed
Disclosed February 14, 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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