What are some effective strategies for mitigating XSS attacks?

What are some effective strategies for mitigating XSS attacks?

There are several effective strategies for mitigating XSS attacks, including input validation, output encoding, and using Content Security Policy (CSP). Would you like to know more about any specific strategy?

Can you explain how Content Security Policy works?

Content Security Policy (CSP) is a security feature that helps prevent XSS attacks by allowing you to specify which sources of content are trusted. By defining a CSP, you can control where scripts, styles, and other resources can be loaded from.

What is output encoding and why is it important?

Output encoding is the process of converting data into a format that can be safely displayed in a web browser. It's important because it ensures that any potentially harmful scripts are treated as plain text rather than executable code.

Are there any libraries or tools that can help with XSS prevention?

Yes, there are several libraries and tools available for XSS prevention, such as DOMPurify for sanitizing HTML and OWASP's AntiSamy for filtering user input.