Worked on the Official-MoonDao/MoonDAO repository to enhance backend security and stability, focusing on API development and authorization logic using TypeScript. Addressed a critical vulnerability by ensuring robust authorization checks across all API routes, specifically by properly awaiting addressBelongsToPrivyUser to prevent unauthorized actions. Removed an authentication bypass related to the User-Agent header, thereby strengthening request validation and protecting the XP claim flow from unauthorized access. Maintained clear commit hygiene with concise, audit-friendly messages. The work demonstrated a strong grasp of backend development and security best practices, prioritizing risk mitigation and code maintainability throughout the month’s targeted bug fix efforts.