What are CSP headers and how do they ensure compatibility?

What are CSP headers and how do they ensure compatibility?

CSP headers, or Content Security Policy headers, are security features that help prevent various types of attacks, such as Cross-Site Scripting (XSS) and data injection. They define which resources can be loaded and executed on a web page.

How do different browsers handle CSP headers?

Most modern browsers support CSP headers, but there can be differences in implementation. For example, older versions of Internet Explorer may not fully support all CSP directives.

Can you give me an example of a CSP header?

Sure! A simple CSP header might look like this: Content-Security-Policy: default-src 'self'; img-src https://example.com;. This allows resources to be loaded only from the same origin and images from 'example.com'.

What happens if a browser doesn't support CSP?

If a browser doesn't support CSP, it will simply ignore the CSP headers, and the website will not benefit from the added security measures.