Cyberattack at Osaka Hospital Halted Non-Emergency Services

March 26, 2023


Osaka General Medical Centre issued a statement that the ransomware attack temporarily disrupted the facility’s electronic medical record system. It has stopped providing outpatient care and postponed non-emergency surgeries. The medical centre’s Sumiyoshi Ward is still performing emergency operations.

Hospital staff noticed unusual activity in the hospital’s network in the early hours of October 31. Soon after, they received a message from the threat actors saying: “All files have been encrypted. Please pay in bitcoin for recovery. The amount depends on how quickly you email us.” Staff are working to restore the system and using paper medical records until the incident is resolved.

Incident Date

October 31, 2022



Estimated Cost

No cost values disclosed.

Type of Malware

No Malware identified

Threat Source

No threat source identified