high severity August 09, 2025 · 3 min read Unverified claim — what this is

WaltersMorgan Construction Listed by Sinobi Ransomware Group

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

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

WaltersMorgan Construction Listed by Sinobi Ransomware Group

On August 9, 2025, Walters-Morgan Construction appeared on the leak site of the sinobi ransomware group. The Kansas-based firm, which builds water treatment plants and municipal utilities, is claimed to have had internal files exfiltrated after a ransomware attack. While the exact number of people whose information was taken remains unknown, anyone whose personal or employment records were stored in the company’s systems could be affected.

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What Public Reporting Shows

Public reporting indicates that sinobi listed Walters-Morgan Construction on its leak site on August 9, 2025. The data consists of internal files exfiltrated during a ransomware incident. The company, founded in 1938 and headquartered in Manhattan, Kansas, specializes in water and wastewater infrastructure projects for municipalities. No confirmed count of exposed records has been published, and the precise types of documents remain unclear beyond the broad description of internal files.

Why This Matters for You and Your Family

When a construction company that works with local governments suffers a breach, employee records, vendor contracts, resident contact information, and project-related personal data can all end up in attackers’ hands. If you or a family member has ever worked at Walters-Morgan, lived in a community it served, or appeared in its supplier or permitting files, your information may now be circulating. These leaks rarely stay contained; once files leave the victim’s network they can be traded, sold, or used to launch further attacks against you personally.

The Doxxing and Identity-Chain Risk

Stolen internal files often contain spreadsheets that link names, addresses, phone numbers, email accounts, and sometimes dates of birth. Attackers chain these pieces together with usernames found on gaming platforms, social media, or older breaches. A single leaked work email can lead to discovery of your children’s Roblox or Fortnite accounts, especially if the same password was reused or if family details appear in the same documents. The result is a road map for doxxing, identity theft, or targeted harassment that can affect every member of the household.

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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 Sinobi · 274 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed August 09, 2025

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

Sinobi — 274 incidents tracked

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

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