This record tracks a ransomware attack claimed by the
sinobi group against
L S GRIM. It collects the publicly disclosed attack details — sector, location and
timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAP
Window Zero is the time the breach stayed in the open before
anyone said so — the gap between when the attack was first discovered
on the operator's leak site (t1) and when it was publicly disclosed (t2).
The wider this window, the longer victims, staff and customers were exposed with no warning.
257days open
t1 · Published
t2 · Pending
Business Category
Services
Published
December 18, 2025
Disclosed / Notified
Not disclosed yet
Attack Summary
L.S. Grim Consulting Engineers is a Mid-Atlantic-based engineering services corporation specializing in mechanical, electrical, and plumbing engineering design and consulting. They offer a variety of services including electrical systems, fire protection, and project management, all designed to meet code requirements and support LEED certification. With over 30 years of experience, their team focuses on quality control and effective project management to ensure client satisfaction. Their intended clients include organizations needing comprehensive engineering solutions and facilities management.
Leak Screenshots
SAMPLE
This is what a leak gallery looks like. Sign in to see the
screenshots our collector has actually taken of this listing.
Dark Web Exposure
Findings for lsgrim.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
57+
found in Traditional breaches
24+
found in Ransomware leaks
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
Hedrick Brothers Construction
play · ransomware
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
MySpace_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
LKnet reserve chat · breach
••• emails
B F R e p o V 3 F i l e s · breach
••• emails
DL| Database catalog · breach
••• emails
+ 10 more leak sources locked
Leak volumes are locked
Sign in to reveal how many records each source exposed and the remaining 13 sources.
Legal Disclaimer:
This ransomware victim record reflects information published on the operator's leak site.
Breach.house only records what the operators themselves publish in the
open. We take screenshots of their public pages and keep the proof
material they post there, so that a listing can be verified and its status
tracked over time. We do not purchase data, we do not solicit or encourage
its publication, we do not access any private system, and we do not alter
anything we record. Nothing is offered for download here, and detailed
content is not published on this page or anywhere else on the public site:
access to it is restricted to vetted customers under contract, for
incident response, due diligence and cyber-resilience work.
Breach.house is not affiliated with, and does not act on behalf of, the
operators who publish this material. If you represent an organisation or
individual named here and want a record reviewed or removed, contact us
and we will act on it.