During March 2026, Dowan Gullient focused on enhancing the security and reliability of artifact retrieval processes in the home-assistant/buildroot repository. He addressed a critical bug by migrating artifact downloads to HTTPS and updating to a .org domain, reducing the risk of man-in-the-middle attacks and runtime test failures caused by external URL changes. Using Python and backend development skills, Dowan verified the stability of runtime tests and ensured correct artifact handling. His work improved CI reproducibility and supply-chain hygiene, with clear commit traceability and explicit sign-offs that support future audits and collaborative maintenance. The contribution demonstrated careful attention to security practices.