Implementing CSRF Protection and Secure Session Management

Web security is no longer optional; it is a fundamental requirement for any application handling user data. Cross-Site Request Forgery (CSRF) remains one of the most critical vulnerabilities that developers must understand and actively defend against. This written course guides you through the core concepts of web security, focusing on how to implement robust session management and token-based CSRF defenses. You will learn how to secure web applications by reading detailed explanations, analyzing secure code snippets, and working through conceptual implementation exercises. What you will learn: Understand the mechanics of Cross-Site Request Forgery (CSRF) attacks and how exploiters target web sessions; Implement secure session management abstractions to track and validate user states safely; Configure modern cookie attributes, including SameSite, Secure, and HttpOnly, for defense-in-depth protection; Generate, transmit, and validate anti-CSRF tokens within web forms and API requests; Analyze vulnerable application code and apply secure coding practices to mitigate session hijacking. The course starts with essential security terminology and the foundational mechanics of HTTP requests, cookies, and sessions. From there, you will progress to step-by-step written walkthroughs of token generation, storage, and validation patterns. Designed for beginner developers and web enthusiasts looking to build a strong foundation in application security, this course requires no advanced security background. Start reading today to build safer, more resilient web applications.