Ransomware victim disclosure
← All victimsShiramume Hospital
Claimed by netrunner · listed 6 days ago
Status timeline
- Listed
May 15, 2026
Current state: Listed for ransom
At a glance
- Group
- netrunner
- Status
- Listed for ransom
- Country
- Japan
- Sector
- Healthcare
- Listed on leak site
- May 15, 2026
About the victim
AI dossier — public-source company profileShiramume Hospital is a regional general hospital in Japan providing comprehensive inpatient and outpatient care. It offers services in internal medicine, surgery, emergency care, obstetrics/gynecology, and rehabilitation, supported by diagnostic imaging and laboratory facilities. No further details regarding size, founding date, or precise location are available from the leak post or a public site.
- Industry
- Healthcare — Regional General Hospital
Attack summary
Severity: medium — The victim is a healthcare provider, which inherently involves regulated and sensitive patient data (PII, medical records); however, the post is a bare listing with no confirmed exfiltration, no proof files, no data volume disclosed, and no operational impact described, warranting medium rather than critical.The netrunner group has listed Shiramume Hospital as a victim; the post does not specify whether data was encrypted, exfiltrated, or both, and no ransom amount or data volume is stated.
What the group claims
A regional general hospital in Japan providing comprehensive inpatient and outpatient care, offering services in internal medicine, surgery, emergency care, obstetrics/gynecology, and rehabilitation, supported by diagnostic imaging and laboratory facilities.
The leak post
captured from the group's siteSeoyon E‑Hwa Summit is a subsidiary of Seoyon E‑Hwa that manufactures automotive components, operating as part of Seoyon E‑Hwa’s international production network. GEG srl (est. 1981) designs and builds integrated mobile radio systems across Italy. Over 35 years it served 500+ public administrations and manages 100,000+ radios. Since 2004 it is Italy’s exclusive DAMM TETRA distributor. It held ~60% of the civilian TETRA market (350+ base stations) Shiramume Hospital is a regional general hospital in Japan providing comprehensive inpatient and outpatient care. It offers services in internal medicine, surgery, emergency care, obstetrics/gynecology, and rehabilitation, supported by diagnostic imaging and laboratory facilities. Nippon Medical School Musashi Kosugi Hospital Nippon Medical School Musashi Kosugi Hospital is a 372-bed regional teaching hospital in Nakahara-ku, Kawasaki (Musashi-Kosugi area), affiliated with Nippon Medical School. Established in 1937, it offers comprehensive services across 36 clinical departments, including emergency and critical care, ICU, NICU, perinatal and pediatric care, cancer treatment, and minimally invasive endovascular procedures. The hospital…
Screenshot of the leak post

Sources
Source
Indexed 6 days agoThis page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.
