NetRunnerPR
NetRunnerPR has claimed to breach the networks of Shiraume Hospital and Nippon Medical School Musashi Kosugi Hospital in Japan, exfiltrating patient PII and medical records. The actor announced plans to release a complete database on March 5, 2026, and an additional 20,000 records on February 16, 2026, contingent on undisclosed conditions. The claims were made on a cybercrime forum, accompanied by sample data to validate the breaches. NetRunnerPR's account shows limited activity history and lacks a documented history of major ransomware operations or confirmed breaches, raising questions about the credibility of the claims.
CVEs in recent coverage
No CVEs named alongside this actor in the last 90 days.
Recent victims
No leak-site posts on record for this group.
Recent activity
No posts or advisories have named this actor recently.
References
From the MISP threat-actor galaxy, MITRE ATT&CK and RansomLook (CC BY 4.0). Activity is any post or advisory Watch Floor collected that names the actor or one of its aliases.