Explore the complexities of securing Single Page Applications (SPAs) in this comprehensive conference talk from AppSecUSA 2016. Dive into the concept of becoming a Mixed Multilayer Application (MMA) Hacker, drawing parallels between mixed martial arts and the multifaceted approach needed for SPA security. Learn about various application layers, including interface, backend, network, and interconnectivity. Gain insights into SPA frameworks like AngularJS and ReactJS, REST APIs, WebSockets, and the security implications of third-party integrations. Discover available tools and potential gaps in addressing these challenges. Whether you're a seasoned security professional or just starting out, this talk provides valuable training to enhance your SPA security skills and stay ahead in the rapidly evolving world of web and mobile application development.