Osaka General Medical Center: an apparent ransomware attack disabled its electronic medical records and stopped normal care

An apparent ransomware attack disabled its electronic medical records, and it suspended non-emergency surgery and outpatient care.

Disclosed

2022-10-31

Organizations involved

Leaked or at risk

Unknown

Downtime

Unknown

What happened

2022-10-31
An apparent ransomware attack caused a failure of the electronic medical record system, and it paused non-emergency surgery and outpatient care. It announced that this would continue from the next day. [1]
2022-12-12
The electronic medical record server was restarted. [2]
2023-01-11
Medical services were fully restored. [2]
2023-03-28
It published an investigation report, 75 pages with a 7-page summary. It pointed out a fading of security awareness caused by a false myth about closed networks. [2]

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						Note
Osaka Prefectural Hospital Organization	[Breached]	[Critical]	Osaka, Osaka, Chuo	Medical care and welfare	Unknown