DisclosureLens
GLOBALMalwareTransportation & LogisticsTransportationRansomwareInterlockRansom DemandedActor NamedData Leak ThreatenedData PublishedHigh

Lonestar Truck Group & Tag Truck Center

bd_0cd598602510421b · schema v1 · pii pii-v1

Severity

High

Discovered

Filed

May 4, 2026

To disclose

Affected

Not disclosed

Linked

3 filings

Confidence

50%
Full breach record for Lonestar Truck Group & Tag Truck Center

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Interlock on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.

Group activity: Transportation/LogisticsDiscovered: 2026-05-04

Source: Ransomware.live

Post text · scraped from the leak site

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.

Incident timeline — mostly unverified

? — ?

Breach window unknown

May 4, 2026

Claim posted

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

Claim → filing

Compliance clock

Not assessable

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Filing propagation · 3 filings · 2 states

View merged incident ↗
Leak SiteMay 4 · first · this page

Pattern: first filing May 4, last May 28 (TX) — a 23-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claimThis record

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filing

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source ceiling

  • actor name
  • victim claim
  • ransom/leak status
  • discovery date
  • materiality
  • notification
  • affected count
  • confirmed data types
  • compliance clock

The ✕ fields stay blank until a regulatory filing or victim disclosure lands.

About this groupFirst seen 2023-12-01

interlock

According to ransomware.live, Interlock is a ransomware group first observed in September 2024 that targets critical infrastructure sectors including healthcare, government, education, and technology across North America and Europe using double-extortion, with 57+ claimed victims including a major US dialysis provider exposing over two million patient records.

127 tracked hereFull profile →