総合大雄会病院

Daiyukai General Hospital, also known as 総合大雄会病院, is a healthcare organisation based in Japan. It operates as a general hospital, providing medical services to the local community. As a general hospital, it offers a range of clinical services that typically include inpatient and outpatient care. The organisation serves patients seeking diagnosis, treatment, and ongoing medical management. Its role in the healthcare sector is to deliver comprehensive care across multiple specialties. The facility is recognised by its Japanese name, reflecting its institutional identity.

In February 2022, the hospital experienced a malware infection involving Emotet‑type viruses on some internal computers. The infection led to the sending of unauthorized emails that impersonated legitimate departments or staff. As a result, historical email correspondence and stored address data were leaked. The leaked information facilitated fraudulent communications directed at external parties. The hospital responded by disinfecting affected devices using security software. It also collaborated with internet providers for log analysis and strengthened email server protections. Ongoing measures included quarantining potentially compromised systems to limit further exposure. Recipients of suspicious messages were advised to verify sender addresses and avoid interacting with attachments or links.