Foundations of REST API Security

Every day, web applications exchange massive amounts of sensitive data through application programming interfaces. As these integrations grow, they become prime targets for malicious actors, making a deep understanding of API security absolutely essential for modern developers. This course guides you through the fundamental shifts in web architecture and explains why traditional security measures are no longer enough to protect decentralized services. You will transition from understanding basic web communication to conceptualizing robust, multi-layered security strategies for APIs. What you'll learn: Understand the evolution of web services and how modern API architecture introduces unique security vulnerabilities; Analyze the core principles of the OWASP API Security Top 10 to identify common threat vectors; Learn how authentication and authorization mechanisms like OAuth and JSON Web Tokens protect endpoints; Explore the role of rate limiting, throttling, and input validation in preventing abuse; Discover how modern zero-trust architecture and secure transport protocols keep data safe in transit. We begin with essential terminology, architectural history, and foundational security concepts before exploring real-world threat scenarios and modern defensive strategies. This text-based course is designed for beginner developers, software students, and technology curious professionals with no prior security background required. Start reading today to build a solid foundation in securing modern web connections.