Introduction to Web Application Security

Building web applications is only half the job; ensuring they are safe from malicious attacks is essential for any developer today. As cyber threats evolve, understanding how to protect user data and secure your code is a critical skill for building trust and maintaining reliable software. This text-based course takes you from basic security terminology to applying practical defense strategies. You will explore how attackers exploit common weaknesses and learn how to implement robust defenses across both the front-end and back-end of your applications, incorporating modern security practices to keep data safe. What you'll learn: - Understand fundamental security concepts, key terminology, and the modern threat landscape. - Identify and mitigate common front-end vulnerabilities like Cross-Site Scripting (XSS) and CSRF. - Secure back-end systems against injection attacks and unauthorized data access. - Implement modern authentication concepts, including token-based flows and secure session management. - Apply current best practices for password hashing and secure data storage. - Configure modern browser security features like Content Security Policy (CSP) and CORS. The course begins by establishing foundational security definitions and zero-trust concepts before moving into specific front-end and back-end vulnerabilities. You will read through clear explanations and practical code snippets to build a comprehensive mental model of modern web security. Designed entirely for beginners, this course requires no prior cybersecurity experience, making it perfect for new developers looking to write safer code from day one. Start reading today to build the confidence to secure your web applications against modern threats.