Frontend Security: Protecting Web Applications from Modern Exploits

Modern frontend applications are increasingly targeted by attackers exploiting vulnerabilities in client-side code and third-party dependencies. Understanding how these security exploits work is the first step toward building resilient web applications. This text-based course guides you through the core principles of frontend security, from fundamental concepts to real-world defense strategies. You will transition from writing functional code to writing secure, resilient client-side applications that protect user data. What you'll learn: - Understand fundamental security terms like Cross-Site Scripting (XSS), Cross-Site Request Forgery (CSRF), and Remote Code Execution (RCE) - Identify and mitigate security risks associated with third-party package dependencies and supply chain attacks - Configure robust Content Security Policies (CSP) to restrict unauthorized script execution and data exfiltration - Apply modern authentication best practices, including secure cookie handling and token storage - Implement security best practices within modern frameworks to prevent injection vulnerabilities - Practice auditing your codebase using modern command-line security tools to catch vulnerabilities early The course begins with foundational definitions of web security, then moves into analyzing common frontend attack vectors, and concludes with practical strategies for securing your build pipelines and runtime environments. This course is designed for beginner to intermediate frontend developers, web designers, and software engineers who want to build a strong foundation in client-side security without needing prior security experience. Start reading today to build safer, more secure web applications that your users can trust.