The Growing Importance of Interoperability and Third-Party Component Security

Key takeaways

• Interoperability in medical devices, while beneficial for functionality, significantly expands the cybersecurity attack surface due to new connection points.
• The concept of a 'second-order attack' is critical: compromising one system, such as a PACS server, can indirectly lead to the compromise of an interconnected medical device.
• Security risks associated with interoperability are bidirectional; an insecure hospital network can compromise a medical device, and a vulnerable medical device can be a pivot point to attack other critical hospital systems like EMRs.
• Robust data integrity and authentication checks are essential for medical devices, ensuring all incoming and outgoing data is validated for source and to prevent tampering, addressing the FDA's focus on authentication.
• Medical device manufacturers should prioritize using established, open-source communication protocols like DICOM over proprietary ones to leverage battle-tested security.
• Implementing strict access controls for physical and logical ports, including whitelisting for authorized devices like USB peripherals, is crucial for mitigating attack vectors.
• The increasing push for digital transformation and data consolidation in healthcare necessitates addressing interoperability security as a fundamental aspect of patient safety, especially considering hospital networks can be 'hostile' environments.
• Many healthcare networks exhibit significant security vulnerabilities, as demonstrated by instances of exposed EMR systems without password protection, highlighting a critical need for improved security awareness and practices.

Why is interoperability increasing cybersecurity risks in healthcare, and what can we do about it?

Interoperability is making healthcare more efficient but also more vulnerable to cyber threats. In this episode, Christian and Trevor discuss how second-order attacks, misconfigured cloud systems, and poor data integrity controls can compromise medical devices. They also share practical steps manufacturers can take to protect their devices and networks.

Key points:

(02:00) Understanding Interoperability Risks

• The increasing number of connected medical devices and their security challenges.

• How interoperability expands the attack surface in hospital networks.

(10:30) Second-Order Attacks

• Why attacking one system can compromise another in unexpected ways.

(20:45) Industry Challenges

• The MGM cyberattack and how a single vulnerability led to widespread damage.

(30:20) Best Practices for Secure Interoperability

• Validating all data entering and exiting a medical device.

• Restricting access to USB ports and other high-risk connection points.

• The potential (and pitfalls) of blockchain for medical records.

• Why security awareness must evolve alongside interoperability.

Resources mentioned in this episode that you can Google:

• Showdan search engine for devices.

• MedTech World, a conference on MedTech innovations.