Jon Turdiev: You're right, developing patient care devices brought its own unique set of security challenges and concerns. It involved handling sensitive data like medical records and real-time health data from wearables, requiring stringent privacy and data integrity measures. Compliance with regulations like HIPAA was mandatory, necessitating robust authentication, system hardening, vulnerability management, and audit controls. High availability and resilience were critical, as system failures could be potentially life-threatening. We had to build in redundancies, failover mechanisms, and ensure overall reliability. Additionally, we needed to account for the diverse user base - doctors, nurses, patients - across various care settings like hospitals and homes, enforcing least-privilege access and making security intuitive for all user types.