Worked on security hardening for the tauri-apps/tauri repository by addressing a vulnerability in WebView’s handling of .localhost local origins on Windows and Android. Updated the origin validation logic in Rust to ensure only legitimate .localhost domains are recognized as local origins, reducing the risk of spoofed origins. Added comprehensive tests to validate the new behavior and documented the security rationale and implementation details. Collaborated across teams to merge the changes from an external fork, reinforcing secure defaults and cross-platform reliability. The work focused on backend development and contributed to a more robust security posture for Tauri applications.