Nippon Medical School Musashi Kosugi Hospital
About the organisation
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 serves as a regional hub with disaster-resistant facilities and an on-site heliport, and emphasizes advanced, patient-centered care and medical education.
What the listing means
Nippon Medical School Musashi Kosugi Hospital appeared on the netrunner leak site on 03 April 2026. Groups publish a victim once negotiations stall or as pressure during them, so a listing usually means data was already exfiltrated. This group has not published new claims in the last 30 days.
Recommended actions
- Treat any unsolicited message referencing Nippon Medical School Musashi Kosugi Hospital as suspicious — leaked data gets weaponised for phishing within days.
- If you hold an account on www.nms.ac.jp/kosugi-h, change that password now, update it anywhere you reused it, and enable two-factor authentication.
- Other Healthcare organisations should review this group's known TTPs and validate detection coverage against them.
- Watch for follow-on extortion: stolen data is often re-leaked or resold after the initial listing.
- A leak-site listing is a claim made by the attacker, not a confirmed breach — check the organisation's own disclosures before acting on it.
Leak-site evidence
Listing URL https://www.ransomware.live/id/TmlwcG9uIE1lZGljYWwgU2Nob29sIE11c2FzaGkgS29zdWdpIEhvc3BpdGF...
Show leak-site screenshot
Captured from the group's extortion site. It may contain the victim's data or the attacker's messaging.
