Cleveland Clinic operates over 300 clinical facilities across six countries, processing protected health information for tens of millions of patient encounters annually. The attack surface spans legacy hospital systems, research networks, IoT medical devices, and patient-facing digital platforms including Epic MyChart deployments. With 48,000 employees across healthcare delivery, research, and education operations, the threat model includes ransomware targeting clinical operations, supply chain attacks on medical device firmware, and credential theft across federated identity systems spanning Ohio to Abu Dhabi.
The security organization defends a hybrid environment where uptime directly impacts patient safety - electronic medical records can't go offline, imaging systems must remain available during procedures, and research data handling must satisfy HIPAA, GDPR, and international equivalents simultaneously. The infrastructure includes on-premises data centers supporting clinical operations, cloud environments for research collaboration, and air-gapped networks for sensitive studies. Northeast Ohio's largest private employer, the organization has been expanding its digital footprint since 1921, meaning security teams inherit decades of technical debt alongside modern cloud architecture.
Security work here means securing clinical IoT at scale, implementing zero-trust architectures across international jurisdictions, and building detection capabilities that account for legitimate 3 a.m. database queries from oncology researchers versus actual exfiltration. The operational reality involves coordinating incident response across time zones, managing vendor risk for medical device manufacturers, and architecting controls that don't break clinical workflows during trauma cases.
