This record tracks a ransomware attack claimed by the
thegentlemen group against
Omikenshi. 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.
-67days
t1 · Published
t2 · Disclosed
Business Category
Manufacturing / Engineering
Disclosed / Notified
Jan 16, 2026
Attack Summary
omikenshi.co.jp zoominfo.com/c/omikenshi-co-ltd/372144961 Omikenshi specializes in the production of textiles, including cotton and yarn, as well as advanced processing technologies. The company also offers a range of lifestyle products, cosmetics, and software development services. Their intended clients include businesses seeking office supplies and electronic catalogs. Additionally, Omikenshi is committed to environmental sustainability and actively engages in eco-friendly practices
Leak Screenshots
SAMPLE
Proof-of-breach screenshots the operator posted from the stolen data. Previews are
redacted and locked — the originals are available on HaveIBeenRansom.
Dark Web Exposure
Findings for omikenshi.co.jp
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
45+
found in Traditional breaches
37+
found in Ransomware leaks
Hedrick Brothers Construction
play · ransomware
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
2844Breaches_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · 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
DiskUnion_701k.txt
Durov · breach
••• emails
+ 3 more leak sources locked
Leak volumes are locked
Sign in to reveal how many records each source exposed and the remaining 6 sources.
Legal Disclaimer:
This ransomware victim record reflects information published on the operator's leak site.
Breach.house does not acquire, download, host, access or redistribute unlawfully obtained data. It indexes only publicly visible information posted by ransomware, breach and infostealer operators and open web sources, without accessing the underlying stolen content. The service supports public awareness, legitimate research and cyber-resilience.