Explore the fundamentals of REST APIs and their security implications in this 28-minute conference talk from Derbycon 2016. Dive into key concepts such as REST vs SOAP, status codes, data formats, and resource relationships. Learn about RESTful API classification and testing techniques using tools like Postman and Burp Suite. Discover essential security considerations, including protecting HTTP methods, implementing JSON Web Tokens (JWT), safeguarding sensitive resources, and applying input validation and output encoding. Gain valuable insights to enhance your understanding of REST API development and security practices.