In July 2025, Alex Trepca focused on security and stability within the edx/configuration repository, addressing AWS credential management. He reverted the AWS assume-role session duration from four hours back to one hour, restoring the default policy to reduce risk from long-lived temporary credentials. This targeted change, implemented using Shell scripting and AWS CLI, preserved existing deployment workflows while reinforcing least-privilege access controls. Alex documented the rationale and logic in the commit history, ensuring traceability for future audits. His work demonstrated a careful approach to change management, emphasizing security best practices and maintaining the integrity of credential lifecycles across environments.