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Shinwa Co Ltd

everest

This record tracks a ransomware attack claimed by the everest group against Shinwa Co Ltd. 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.

212days open
t1 · Published t2 · Pending
Feb 01, 2026Not disclosed yet
Country
Japan
Business Category
Construction / Real Estate
Employees
51-100
Discovered
2026-02-01
Published
February 01, 2026
Disclosed / Notified
Not disclosed yet
Victim ID
UBbOB7A3uelI

Attack Summary

[AI generated] "Shinwa Co Ltd" is a Japan-based company primarily engaged in the civil engineering and construction business. The company's operations include disaster recovery work, civil engineering, and building construction. Its construction business involves the building of private homes, condominiums, and commercial facilities. Shinwa also partakes in real estate buying, selling, and rental activities. They are headquartered in Osaka, Japan.

Leak Screenshots

SAMPLE

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finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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Dark Web Exposure

Findings for shinwa.co.jp — indexed by HaveIBeenRansom.
0
found in Infostealer logs
1
found in Traditional breaches
0
found in Ransomware leaks
Lifebear_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
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