www.kumagaigumi.co.jp
ransomhubThis record tracks a ransomware attack claimed by the ransomhub group against www.kumagaigumi.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 GAPWindow 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.
Attack Summary
www.kumagaigumi.co.jp is listed as a victim of the ransomhub ransomware operation. It operates in the Other sector. The affected entity is based in Japan. The attack was first observed on July 20, 2024 and published on the group's leak site on January 05, 2024. Breach House tracks this attack from public ransomware leak-site postings for threat-intelligence purposes.
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.