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Just Concrete & Masonry

play

This record tracks a ransomware attack claimed by the play group against Just Concrete & Masonry. 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.

488days open
t1 · Published t2 · Pending
May 06, 2025Not disclosed yet
Country
United States
Business Category
Public Sector
Employees
51-100
Discovered
2025-05-12
Published
May 06, 2025
Disclosed / Notified
Not disclosed yet
Victim ID
bOi5lrAF3fXh

Attack Summary

United States

Leak Screenshots

SAMPLE

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file_tree.png
finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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What's In This Leak

Composition analysis from Have I Been Ransom · ransomware leak.
72
Records
2
File types
YES
Identity documents present
json 61 records · 38 files
databases 11 records · 3 files
Emails
•••••••
Corporate
••••••
••%
Personal
••••••
••%
Identity documents
••••
••% of records
Full composition is locked
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Dark Web Exposure

Findings for jcmi.com — indexed by HaveIBeenRansom.
0
found in Infostealer logs
15+
found in Traditional breaches
13+
found in Ransomware leaks
Just Concrete & Masonry
play · ransomware
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum 🪾 · breach
••• emails
Dropbox_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
CafePress_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Database World ROC · breach
••• emails
LKnet reserve chat · breach
••• emails
Database World ROC · breach
••• emails
+ 2 more leak sources locked
Leak volumes are locked
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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.