high severity December 18, 2025 · 3 min read Unverified claim — what this is

L S GRIM Listed by Sinobi Ransomware Group

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

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

L S GRIM Listed by Sinobi Ransomware Group

On December 18, 2025, engineering firm L.S. Grim Consulting Engineers appeared on the leak site of the sinobi ransomware group. The company, based in the Mid-Atlantic region, is claimed to have had internal files exfiltrated following a ransomware attack. While the exact number of individuals whose information may have been exposed remains unknown, anyone whose personal or employment records were stored in the firm’s systems could be affected.

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What Public Reporting Shows

Public reporting indicates that sinobi actors stole internal documents from L.S. Grim Consulting Engineers, a firm with more than 30 years of experience in mechanical, electrical, plumbing, fire protection, and project management services. The data was published on the group’s .onion leak site. No confirmed total of victim records has been released, and the precise types of files remain unclear beyond the description of “internal files.” The incident follows the group’s typical pattern of exfiltration before encryption or public shaming.

Why This Matters for You and Your Family

When an engineering or consulting company is breached, the exposed data often includes employee names, addresses, Social Security numbers, payroll details, client contacts, and project records. If you or a family member ever worked with L.S. Grim, had medical facilities or commercial buildings designed by them, or appeared in their vendor or facilities-management files, your information may now be in attackers’ hands. Stolen employee and client data frequently surfaces in follow-on fraud, identity theft, and targeted phishing campaigns that reach family members as well.

The Doxxing and Identity-Chain Risks

Leaked internal files can contain email addresses, usernames, phone numbers, and notes that link professional identities to personal ones. Attackers chain these fragments with data from earlier breaches to build complete profiles. A single work email can lead to personal accounts, home addresses, and even children’s online profiles. Credential leaks like this one regularly cascade into gaming-account takeovers, where kids’ usernames and reused passwords become entry points for further harassment or extortion.

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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 December 18, 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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