Worked on security hardening and log hygiene for the go-gitea/gitea repository, focusing on backend development with Go. Addressed a critical security issue by implementing a fix that sanitizes credentials in indexer connection strings before they are written to logs, using util.SanitizeCredentialURLs to prevent password exposure. This targeted update improved the repository’s logging practices and ensured sensitive data was not inadvertently disclosed, supporting better compliance and observability. The work demonstrated careful attention to secure data handling and traceability, linking the fix to specific issues and commits, and showcased skills in backend engineering, security, and logging within a collaborative open-source environment.