Preventing Clickjacking and Cross-Site Scripting Attacks

Web applications face constant security threats, with clickjacking and Cross-Site Scripting (XSS) ranking among the most common vulnerabilities. Understanding how malicious actors exploit these flaws is the first step toward building resilient, secure websites. This written course guides you through the mechanics of client-side web attacks and teaches you how to implement robust defenses. You will learn to think like an attacker to identify vulnerabilities, and then apply modern defensive strategies to protect your users' data. What you'll learn: • Understand the core mechanics of clickjacking and UI redressing • Identify different types of Cross-Site Scripting, including stored, reflected, and DOM-based attacks • Configure modern web security headers such as Content Security Policy and X-Frame-Options • Implement secure input sanitization and output encoding techniques • Apply modern cookie security attributes to mitigate session hijacking • Practice auditing web pages for client-side security vulnerabilities. You will start by exploring foundational web security concepts and terminology before diving deep into the technical details of clickjacking and XSS. Through clear explanations and practical code examples, you will learn to configure secure headers and write defensive code step by step. This course is designed for beginner web developers, aspiring security analysts, and anyone curious about web application security. No prior security experience is required, though a basic familiarity with HTML and JavaScript is helpful. Equip yourself with the essential skills to build safer web applications and protect your users today.