high severity June 11, 2025 · 3 min read Unverified claim — what this is

Skyline Dubuque Listed by Global Ransomware Group

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

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

Skyline Dubuque Listed by Global Ransomware Group

On June 11, 2025, family-owned snow removal and salt distribution company Skyline Dubuque appeared on a global ransomware leak site, with attackers claiming to have exfiltrated internal files from the Iowa-based business.

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What Public Reporting Shows

Public reporting indicates the company, also known as Skyline Salt Solutions, was listed by the ransomware group on that date. The firm, founded by Mark Arthofer in Dubuque, Iowa, specializes in snow management services and products, including its patented Sky-Link Mix Master for treating road salt. Available reporting describes the exposed material as internal files, though the exact volume and full list of data types have not been independently verified. No confirmed victim count for individuals has been released, and it remains unclear whether customer, employee, or vendor personal information was included in the exfiltrated data.

Why This Matters for You and Your Family

When a local business like Skyline Dubuque suffers a breach, the ripple effects can reach ordinary families in the community. If your address, phone number, email, or payment details were stored in the company’s systems, that information may now sit on a ransomware leak site where anyone can download it. Once posted publicly, stolen data tends to spread quickly across underground forums, fueling further fraud, spam, and identity theft attempts against you and your family. Even small businesses handling routine customer records become high-value targets because their security budgets are often limited compared with larger corporations.

The Doxxing and Identity-Chain Implications

Credential leaks from incidents like this frequently cascade into account takeovers and doxxing chains. An email and password pair taken from one service is tested against your banking, email, social media, and gaming accounts. Children’s gaming profiles linked to a family address or shared phone number can become entry points for harassment or further data harvesting. Public reporting indicates these chains can connect an old work email to personal social-media handles, home addresses, and family member names within hours once the initial dataset appears online.

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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

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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 Global · 38 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed June 11, 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

Global — 38 incidents tracked

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