high severity December 06, 2025 · 4 min read Unverified claim — what this is

lso.com Listed by Embargo Ransomware Group

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

Lone Star Overnight (LSO) is headquartered in Austin, Texas, and, over the last 30 years, has become a leading regional parcel delivery company. LSO has a netwo... - LSO does not understand encryption so we demonstrated for them how encryption works. We have ~500 GB data total includin...
— from Embargo’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.

lso.com Listed by Embargo Ransomware Group

On December 6, 2025, parcel delivery company Lone Star Overnight appeared on the leak site of the embargo ransomware group. The attackers claim to have exfiltrated roughly 500 GB of internal files after demonstrating to the Austin-based firm that its encryption could be bypassed. While the exact number of customers and employees whose information was taken remains unknown, anyone who has shipped packages with LSO, worked there, or had their details stored in the company’s systems could be affected.

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What Public Reporting Shows

Public reporting indicates that embargo posted proof of the breach on its dark-web leak portal, including samples that appear to show internal LSO documents. The company, which has operated a regional parcel delivery network across Texas and surrounding states for more than 30 years, has not yet issued a public statement confirming the volume or exact nature of the stolen data. Available reporting describes the exposed material as internal files rather than a simple database dump, suggesting the attackers accessed a broader range of business records than a typical credential breach.

Approximately 500 GB of data is claimed to have been taken. No confirmed list of specific data fields—such as customer names, addresses, payment details, or employee Social Security numbers—has been independently verified, but the size alone signals that sensitive operational and personal records were likely included.

Why This Matters for You and Your Family

When a delivery company loses control of internal files, the ripple effects reach ordinary households. If you have ever used LSO to ship gifts, important documents, or everyday parcels, your shipping addresses, contact numbers, and possibly payment information may now sit in an attacker’s archive. For families, that single exposure can quietly link your home address to email accounts, phone numbers, and other services where you reuse the same login details.

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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 Embargo · 41 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed December 06, 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

Embargo — 41 incidents tracked

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

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