Web Application Security: Protecting Apps Against Modern Threats

In an era of constant cyber threats, building functional web applications is no longer enough—they must be secure by design. This text-based course guides you through the fundamentals of web security, helping you think like a defender to protect your users and data. You will transition from writing vulnerable code to implementing robust, modern security measures across your entire development lifecycle. You will learn to recognize common attack vectors and apply proactive defense mechanisms to neutralize them before they reach production. What you'll learn: Understand core security principles, including the CIA triad and threat modeling basics; Identify and mitigate critical vulnerabilities from the OWASP Top 10, such as SQL injection and XSS; Implement secure modern authentication and authorization flows, including token-based security; Configure secure HTTP headers and Cross-Origin Resource Sharing (CORS) policies; Apply zero-trust architecture concepts to protect web APIs and backend services; Integrate automated security scanning tools into modern CI/CD development pipelines. The course begins with foundational security terminology and threat modeling concepts before moving into practical defensive coding strategies and modern configuration practices. Through clear written explanations and realistic code examples, you will build a solid foundation in web defense. This course is designed for beginner developers, QA engineers, and technology enthusiasts who want to build secure web applications. No prior cybersecurity experience is required. Start securing your applications today by mastering the fundamentals of web defense.