Ransomware.live listed Sarku Japan as a victim of the group identified as The Gentlemen, with an attack timestamp of September 15, 2026. The listing is an unverified ransomware-tracker report and does not establish that Sarku Japan confirmed the incident.
The available material does not identify affected individuals, exposed data types, Social Security numbers, medical information, financial information, affected states, regulator notifications, or consumer notices. No official breach notification or public litigation was identified in the sources reviewed. The entity-level impact remains unknown.