In May 2025, Jaehoon Lee enhanced the spring-projects/spring-security repository by implementing password update support in JdbcUserDetailsManager. He integrated the UserDetailsPasswordService interface, enabling secure credential rotations while introducing a configurable flag to toggle password updates, which preserved backward compatibility and minimized risk of unintended changes. Lee wrote comprehensive unit tests to verify the new behavior and updated Javadoc and author metadata to document the capability. His work, focused on backend development with Java, JDBC, and Spring Security, improved the security posture of the codebase and maintained high code quality through thorough testing and clear, standards-aligned documentation updates.