Worked on security hardening and reliability improvements for the emscripten-core/emscripten repository, focusing on patch management and compliance. Addressed a high-severity vulnerability by updating the Libpng dependency to version 1.6.55, which enhanced both security and image processing reliability for downstream users. The update was implemented through a targeted bug fix using C programming and library management skills, ensuring compatibility with existing build and test pipelines. Python scripting supported the process, particularly in documentation and traceability of the change. The work emphasized maintaining robust security standards while minimizing disruption to ongoing development and ensuring continued reliability for dependent projects.