Worked on the DataDog/dd-apm-test-agent repository to enhance security by implementing a secure default network binding for the test agent. Leveraging Python and Docker, introduced a change so the agent now binds to the loopback interface (127.0.0.1) by default, protecting sensitive AI session data from unauthorized network access. Provided configurable options through a --host flag and HOST environment variable, allowing explicit opt-in for broader network exposure when needed, particularly for Docker deployments. Maintained gRPC dual-stack compatibility when 0.0.0.0 is specified, ensuring deployment flexibility. The work focused on infrastructure and security best practices, with clear documentation and cross-team coordination.