The DevSecOps movement has emphasized embedding security throughout the software development lifecycle for over a decade.Security champions, developers embedded within teams with a focus on security, have been seen as crucial but challenging to implement.Arnica has introduced 'Security Champions with Arnica' to automate the identification of security champions based on their behavior.Traditional methods of building security champions programs often lack scalability and struggle to show measurable impact.Arnica's approach shifts from manual nominations to behavior-based discovery, making the process objective and repeatable.This automation helps identify developers demonstrating secure behavior and engages them through existing tools like GitHub and Slack.The system creates a lightweight security mesh within engineering teams, distributing ownership of security effectively.Arnica ensures security champions handle issues within their codebases, making informed decisions and escalating when necessary.Developers benefit from Arnica's system without needing to use a separate UI, as all security-related actions happen in familiar tools.The platform also aids in career development by providing visibility to developers who actively engage in security tasks.