This presentation will take attendees inside Rocket.Chat’s journey to build a practical, scalable Application Security program supported by open-source technologies and content. Instead of focusing on a single process or tool, we will highlight the broader ecosystem we rely on and how it enables a small security team to manage risks effectively across a large and fast-moving codebase. The session will outline how we integrate security into development workflows, introduce automation that enhances visibility, and promote a security mindset throughout engineering.