Worked on security hardening and reliability improvements for the microsoft/azure-pipelines-extensions repository, focusing on the Ansible extension CLI. Addressed a CodeQL warning by improving shell command handling, specifically escaping user-provided inventory content using the shell-quote library before writing to a file. This approach prevented potential command injection vulnerabilities and aligned with secure coding practices. Utilized JavaScript and TypeScript to implement and document a standardized pattern for secure input handling, enabling safer future changes and audits. The work enhanced the security posture and stability of the extension in CI pipelines, reducing operational risk and supporting robust backend development and DevOps workflows.