NIS2 Compliance for Healthcare: Hospital IT & Medical Infrastructure Security

Medical Device Security

• Legacy medical devices: MRI machines, CT scanners, infusion pumps running Windows 7 or embedded Linux with no vendor patches. 10-20 year equipment lifetimes.
• Network segmentation: Medical devices must be on isolated VLANs. Communication between medical device network and hospital IT must go through firewalls with strict rules.
• Vendor remote access: Medical device vendors (Siemens Healthineers, GE HealthCare, Philips) require remote access for maintenance — must be controlled, audited, and time-limited.
• Firmware updates: Medical device firmware updates require re-validation against IEC 62304 — you can't just patch like IT systems

Clinical Systems

• Electronic Health Records (EHR): Epic, Cerner, or national systems — contain the most sensitive patient data. Must be available 24/7 for clinical decisions.
• PACS (Picture Archiving): Medical imaging storage and retrieval. DICOM protocol has known vulnerabilities. Large data volumes make backup challenging.
• Laboratory Information Systems (LIS): Connected to analysers, sample tracking — downtime means delayed diagnoses
• AI diagnostics: AI-assisted radiology, pathology, and clinical decision support — need both cybersecurity and clinical validation governance

The 10 Minimum Measures Applied to Healthcare

1. Risk management: Cover both IT and medical device networks. Include clinical risk assessment.
2. Incident handling: Clinical incident response plan — who decides to divert patients during a cyber attack?
3. Business continuity: Paper-based fallback procedures for clinical workflows when IT is down
4. Supply chain: Medical device vendor risk assessment. Software component tracking across medical devices.
5. Network security: Segmentation between administrative, clinical, medical device, and guest networks
6. Vulnerability management: Balance between patching and clinical system stability
7. Cyber hygiene: Staff training — healthcare workers are primary phishing targets
8. Cryptography: Encryption of patient data at rest and in transit. HL7/FHIR over TLS.
9. Access control: Role-based access to patient records. Clinical context-based access (emergency override protocols).
10. MFA: All remote access and privileged accounts. Challenge: clinical workflow speed vs security.

Healthcare incidents often have patient safety implications:

• 24-hour early warning to CSIRT — any cyber incident affecting clinical services
• Cross-reporting: Healthcare cyber incidents may also require notification to health regulators, data protection authorities (GDPR breach), and medical device regulators
• Patient notification: If patient data is compromised, GDPR Art. 34 may require direct patient notification
• Clinical impact documentation: Record whether the incident affected patient care — cancelled surgeries, delayed diagnostics, diverted ambulances