Joonas Loppi focused on maintaining secure developer access within the tiiuae/ghaf-infra repository by updating SSH key management for user authentication. He delivered a targeted change to the developer configuration, replacing a public SSH key to ensure uninterrupted and secure access for authorized users. The update was implemented as a single, auditable commit, emphasizing traceability and minimal operational impact. Working with Nix and leveraging his DevOps and system administration skills, Joonas prioritized security and configuration management best practices. While the scope was limited to routine access control, the work demonstrated careful attention to secure authentication and repository auditability over the month.