Marutake
thegentlemenThis record tracks a ransomware attack claimed by the thegentlemen group against Marutake. 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
kk-marutake.co.jp zoominfo.com/c/marutake/561552308 Marutake Co., Ltd. is a comprehensive pharmaceutical and medical wholesale company founded on June 15, 1925, and headquartered in Niigata City, Japan, with a 100-year history of connecting manufacturers to healthcare providers across the region. The company distributes prescription pharmaceuticals, medical devices, clinical diagnostic reagents, hygiene materials, nursing care products, and healthcare IT systems to hospitals, clinics, and pharmacies, primarily across Niigata, Yamagata, Miyagi, Akita, Tokyo, and Gunma prefectures. With a workforce of 477 employees and capital of ¥100 million, Marutake positions itself as a "supporter of the medical frontline," ensuring stable supply of essential medical commodities to local communities
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.