This conference talk by Petros Theocharis at Devoxx Greece 2025 takes viewers on an epic journey through secure software development using Lord of the Rings-themed analogies. Discover how to integrate Application Security into the software development lifecycle by uniting development teams against vulnerabilities, similar to how the Fellowship united against the One Ring. Learn practical strategies for building secure software with open source frameworks, implementing open-source security tools for static scans, and adopting DevSecOps practices without disrupting development workflows. Throughout this 31-minute presentation, gain valuable insights into making security a seamless part of your development process and join the "Fellowship of Secure Software Development" to better protect your applications from security threats.