In this case study, Lei analyzes the cyberattack on University Hospital Düsseldorf in September 2020. The cyber attack led to a hospital-wide system failure and a loss of health data, which delayed emergency care and disrupted the delivery of critical care for some patients. Lei calls attention to the lack of studies completed on this event, which prevents a comprehensive understanding of the attack’s epidemiological impact and its long-term effects on the local health system.