Zeenah Bello focused on enhancing the security of the GitLab Runner installation process by updating documentation in the gitlabhq/gitlab-runner repository. She replaced direct command execution with a safer workflow that instructs users to download and inspect installation scripts before running them, thereby reducing the risk of supply chain attacks during onboarding and deployment. Her work centered on Markdown documentation and incorporated security best practices, emphasizing script verification and safer installation steps. While she did not address bug fixes during this period, her contribution provided a deeper layer of protection for new deployments, reflecting a thoughtful approach to documentation-driven security improvements.