Worked on strengthening security and reliability across the openclaw/openclaw and moltbot/moltbot repositories, focusing on risk reduction and data protection. Delivered comprehensive security hardening for authentication, messaging, and session history in openclaw/openclaw by implementing input validation, OAuth CSRF protection, and prompt size controls using JavaScript and TypeScript. Addressed critical packaging vulnerabilities in moltbot/moltbot by preventing Zip Slip and symlink attacks through robust path validation and an expanded test suite, leveraging Python scripting and shell scripting. Emphasized a secure-by-default and test-driven approach, resulting in measurable improvements to deployment resilience and alignment with security best practices throughout the codebase.