Web Security Essentials: Mitigating Common Vulnerabilities

In an era of persistent cyber threats, building secure web applications is no longer optional—it is a core requirement for every developer. Understanding how attackers exploit vulnerabilities is the first step toward writing resilient, defensive code. This course equips you with the fundamental knowledge to protect your web applications from the most common security risks. You will transition from writing functional code to designing secure systems, learning how to think like an attacker to better defend your users' data and maintain system integrity. What you'll learn: - Understand foundational security principles, including the OWASP Top Ten and zero-trust concepts - Identify and mitigate major injection attacks, including SQL injection (SQLi) and Cross-Site Scripting (XSS) - Secure user sessions and implement robust credential management using modern hashing and encryption techniques - Prevent unauthorized actions through Cross-Site Request Forgery (CSRF) defenses and secure token validation - Configure modern browser security mechanisms, such as Content Security Policy (CSP) headers and sandboxed iframes - Apply input validation, sanitization, and secure communication practices to minimize your application's attack surface You will start with essential security terminology and the psychology of web attacks before exploring detailed explanations of specific vulnerabilities. Through written analysis and conceptual exercises, you will learn how to implement practical defensive strategies. This course is designed for beginner web developers, software engineers, and technology enthusiasts who want to build a solid foundation in web security. No prior security experience is required. Start reading today to build safer, more resilient web applications.