Foundations of Web Security: Understanding Injection Attacks

Web applications are constantly exposed to security threats, with injection vulnerabilities ranking among the most critical risks to data integrity and system control. Understanding how these vulnerabilities work is the first step toward building resilient software. This text-based course guides you through the core mechanics of injection attacks, helping you understand how attackers exploit weak input handling and how to secure your applications against them. What you'll learn: - Understand the fundamental mechanics of injection vulnerabilities in modern web applications. - Analyze how SQL injection exploits database queries to expose or manipulate sensitive data. - Examine command injection vulnerabilities and learn how unauthorized system commands are executed. - Identify Cross-Site Scripting (XSS) types and how they compromise user sessions in the browser. - Apply modern secure coding practices, including parameterized queries, input sanitization, and output encoding. - Explore foundational defense-in-depth strategies like Content Security Policy and the principle of least privilege. You will start with essential web security terminology and core concepts before moving into detailed written walkthroughs of vulnerability patterns and their corresponding defensive solutions. This course is designed for beginner developers, aspiring security analysts, and anyone curious about web application security, with no prior cybersecurity experience required. Begin reading today to build a strong foundation in secure development practices.