In July 2025, Kevin Culp developed a security-focused feature for the microsoft/VirtualClient repository, implementing certificate-based authentication to enhance secure communication between the Virtual Client and its proxy API. He updated the REST client builder in C# to load and attach client certificates, ensuring mutual trust and reducing credential exposure. Additionally, Kevin enhanced the API client manager to parse certificate issuer and subject information directly from the proxy API URI, enabling policy-driven security decisions. His work demonstrated depth in API integration, certificate management, and network programming, delivering a robust solution that addressed authentication and security requirements without introducing new bugs.