This record tracks a ransomware attack claimed by the
lockbit2 group against
shimamura.gr.jp. 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.
1499days open
t1 · Published
t2 · Pending
Disclosed / Notified
Not disclosed yet
Attack Summary
shimamura.gr.jp was named by the lockbit2 ransomware group as a targeted organization. It operates in the Other sector. The affected entity is based in Japan. The incident was first observed on May 09, 2022.
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 shimamura.gr.jp
— indexed by HaveIBeenRansom.
1
found in Infostealer logs
20
found in Traditional breaches
14
found in Ransomware leaks
Dropbox_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
BELL DATA, Inc
medusa · ransomware
••• emails
Peatix_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
Air Cleaning Specialists
play · ransomware
••• emails
udemy.com.zip
Database World ROC · breach
••• emails
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 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.