high severity May 04, 2026 · 4 min read Unverified claim — what this is

Lonestar Truck Group & Tag Truck Center Listed by Interlock Ransomware Group

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

Lonestar Truck Group consists of multiple dealerships that sell new and used trucks and trailers, as well as providing service and parts. They work with a vast number of customers and businesses, yet they have failed to prioritize security. As a result, personal data of employees, contact information for the companies they work with, and a significant number of customer records have been leaked online. We are also presenting their confidential and financial documents for your review.
— from Interlock’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.

Lonestar Truck Group & Tag Truck Center Listed by Interlock Ransomware Group

On May 4, 2026, the interlock Ransomware Group added Lonestar Truck Group and its affiliated Tag Truck Center to its leak site, publishing internal files that include employee personal data, customer records, business contact information, and confidential financial documents.

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Reported Details of the Breach

Public reporting indicates that Lonestar Truck Group, which operates multiple dealerships selling new and used trucks, trailers, and related service and parts, suffered a ransomware attack. The attackers exfiltrated internal files before encrypting systems or otherwise disrupting operations. The data now listed on the interlock leak site contains records belonging to employees, customers, and partner companies. No exact victim count has been disclosed, but the volume is described as significant given the company’s broad customer base across commercial and individual buyers.

Available reporting describes the exposed materials as a mix of personally identifiable information, contact details, and sensitive business documents. The interlock group has given the customary deadline for payment before further data is released or sold, although the precise date has not been independently verified in open sources.

Why This Matters for You and Your Family

If you have ever bought or serviced a vehicle through Lonestar Truck Group or Tag Truck Center, your name, address, phone number, email, or payment-related records may now be circulating among criminals. The same applies if you or a family member worked there or if your business purchased fleet vehicles or parts. Once this type of information leaves a company’s control, it rarely stays contained. It can be combined with other leaks to build a detailed profile that makes identity theft, targeted phishing, or harassment far easier.

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value redacted in this sampleage, relatives, address historySpokeo

value redacted in this samplephone, household, property recordsBeenVerified

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Found in breach recordsverifiedreported — unverified

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unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

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Report details & sourcing

Attributed to Interlock · 126 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed May 04, 2026

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

Interlock — 126 incidents tracked

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

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