This record tracks a ransomware attack claimed by the
qilin group against
Sanko Air Conditioning 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.
-91days
t1 · Published
t2 · Disclosed
Business Category
Services
Published
December 07, 2025
Disclosed / Notified
Sep 08, 2025
Attack Summary
The organization Sanko Air Conditioning Co., Ltd. appears on the qilin ransomware leak site. It operates in the Services sector. The affected entity is based in Japan. The incident was first observed on December 07, 2025. Breach House tracks this attack from public ransomware leak-site postings for threat-intelligence purposes.
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 sanko-air.co.jp
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
42+
found in Traditional breaches
0+
found in Ransomware leaks
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
2844Breaches_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Japan.rar
🇷🇺Alexei Error504🇷🇺 · breach
••• emails
Dropbox_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Lifebear_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
DiskUnion_701k.txt
Durov · breach
••• emails
Peatix_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
+ 1 more leak sources locked
Leak volumes are locked
Sign in to reveal how many records each source exposed and the remaining 4 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.