Worked on the vectordotdev/vector repository to address a critical security vulnerability in GeoIP lookups by upgrading the maxminddb dependency to version 0.27, directly resolving the RUSTSEC-2025-0132 advisory. The approach involved refactoring the existing lookup functions to enhance code readability and maintainability, ensuring that future updates and audits would be more straightforward. Focused on backend development using Rust, the changes reduced the vulnerability surface without impacting core functionality or backward compatibility. All modifications were clearly documented in the commit history, supporting transparent audit trails and facilitating potential rollbacks, while maintaining compliance with security best practices in Rust development.