This record tracks a ransomware attack claimed by the
BrainCipher group against
kisnet.co.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.
127days open
t1 · Published
t2 · Pending
Disclosed / Notified
Not disclosed yet
Attack Summary
[AI generated] Kisnet Co., Ltd. is a Japanese internet service provider based in Japan. The company offers broadband and network connectivity services primarily to residential and business customers. Operating within the telecommunications and ISP industry, Kisnet provides internet access solutions in the Japanese market. The company is part of Japan's regional ISP sector, delivering reliable network infrastructure and related services to its subscriber base.
Leak Screenshots
1 CAPTURED
Captured directly from the operator's leak site by our collector.
Showing the latest capture only
Unlock the daily capture history — up to 45 days of evidence.
Dark Web Exposure
Findings for kisnet.co.jp
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
12
found in Traditional breaches
0
found in Ransomware leaks
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
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
AntiPublic_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
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