What are some examples of XSS attacks?

What are some examples of XSS attacks?

XSS, or Cross-Site Scripting, allows attackers to inject malicious scripts into web pages. Examples include:<br>1. Stored XSS: Malicious script is stored on the server and served to users. <br>2. Reflected XSS: Script is reflected off a web server, often via a URL. <br>3. DOM-based XSS: The vulnerability exists in the client-side code, manipulating the DOM.

How can I prevent XSS attacks?

To prevent XSS attacks, you can:<br>1. Use proper input validation and sanitization.<br>2. Implement Content Security Policy (CSP).<br>3. Encode output data to prevent script execution.

Can you give me a real-world example of a stored XSS attack?

Sure! A famous case is the MySpace 'Samy' worm, where an attacker injected a script into a user's profile. When others viewed the profile, the script executed, adding the attacker as a friend and spreading the worm.

What tools can I use to test for XSS vulnerabilities?

You can use tools like:<br>1. OWASP ZAP: An open-source web application security scanner.<br>2. Burp Suite: A popular tool for web application security testing.<br>3. XSSer: A tool specifically designed to detect XSS vulnerabilities.