Foundations of Web Security: Authentication and Authorization

Every modern web application must securely verify who its users are and control what they are allowed to do. Understanding the core mechanisms of identity and access management is the first step toward building resilient web systems. In this comprehensive text-only course, you will transition from a beginner to a confident practitioner capable of designing secure user flows. You will read clear explanations of security protocols, analyze real-world architecture examples, and learn how to protect user data using modern industry standards. What you'll learn: Understand the fundamental differences between authentication and authorization; Explore multi-factor authentication mechanisms and modern passwordless standards; Implement secure token-based authorization using JSON Web Tokens and modern storage best practices; Analyze the roles and flows of OAuth and OpenID Connect for third-party integration; Apply access control models, including Role-Based and Attribute-Based access control; Adopt zero-trust security principles to minimize vulnerabilities in web application architectures. The course starts with essential terminology and the foundational concepts of web security, guiding you step-by-step through session management, federated identity, and token handling. You will progress from theoretical concepts to practical design patterns through written case studies and conceptual exercises. This course is designed for aspiring web developers, software engineers, and system administrators who are new to security and want to establish a solid foundation without any prior security experience. Start reading today to build a secure foundation for your next web development project.