Worked on the langgenius/dify repository to deliver a security-focused enhancement addressing cross-origin messaging risks. The developer implemented a targeted restriction on the postMessage API by specifying allowed target origins, replacing the previous wildcard approach. This change was designed to strengthen data integrity and reduce the risk of unintended data exposure during external integrations. The solution was developed using React and TypeScript, reflecting a focus on front end security best practices. The work was completed collaboratively, including code review and co-authorship, and resulted in a merged patch that improved the repository’s overall security posture without introducing new bugs or regressions.