Lab Description

Proper input validation is essential for safeguarding web applications against Cross-Site Scripting (XSS) attacks, which can significantly undermine security. By validating and sanitizing user input before processing or displaying it, malicious scripts can be prevented from executing. XSS attacks come in three primary forms: Persistent, Reflected, and DOM-based, each requiring different validation strategies.

In labs focusing on Persistent XSS attacks, the emphasis is on how attackers can inject malicious scripts into data stored by the web application, such as in a database, which then affects other users. Reflected XSS labs demonstrate how attackers can deceive users into clicking on malicious links that send the attack back to the user's browser. DOM-Based XSS labs show how attackers can alter the Document Object Model (DOM) to run malicious scripts. Each lab underscores the necessity of input validation and sanitization to defend against these attacks and maintain a secure web environment.

What You Will Learn

Program Curriculum

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