Ransomware attack at Osaka General Medical Center interrupts clinical services

On October 31, 2022, a ransomware attack caused a major systems outage at Osaka General Medical Center in Japan. The disruption affected electronic medical records and other hospital systems, forcing the suspension of emergency admissions, scheduled surgeries and new-patient consultations. Clinical services resumed progressively through November and December, with the hospital reporting full restoration of its clinical operating arrangements on January 11, 2023. The incident directly interrupted the hospital's delivery of medical services.