Video: Web Application Security Fundamentals

This is a 25-minute educational video covering the foundational concepts needed to understand web application security. It explains the basic building blocks of web applications, such as HTML, HTTP, JavaScript, and cookies, as well as core security concepts like the Same-Origin Policy (a rule that prevents websites from accessing each other's data without permission). The video prepares viewers to understand common security vulnerabilities like XSS (cross-site scripting, where attackers inject malicious code into web pages), CSRF (cross-site request forgery, where attackers trick users into performing unwanted actions), and SQLi (SQL injection, where attackers insert malicious database commands into input fields).