During February 2026, this developer focused on enhancing CI/CD security for the Telefonica/mistica-design repository by overhauling GitHub Actions workflows. Their work centered on reducing credential exposure and defending against fork pull request attacks through improved credential handling and restricted token usage. They updated token permissions, introduced a dedicated GITHUB_TOKEN_MISTICA for sensitive steps, and strengthened input validation to mitigate script injection risks. All changes were implemented using YAML and aligned with security best practices in DevOps. The developer also ensured documentation and naming consistency for security controls, resulting in a more robust and secure CI/CD pipeline for the project.