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An Introduction to Content Security Policy - HTML5 Rocks

Updated: at 08:26 PM

Mike West runs through everything you need to know about Content Security Policy

Instead of blindly trusting everything that a server delivers, CSP defines the Content-Security-Policy HTTP header that allows you to create a whitelist of sources of trusted content, and instructs the browser to only execute or render resources from those sources. Even if an attacker can find a hole through which to inject script, the script won’t match the whitelist, and therefore won’t be executed.

Read more from the source: HTML5 Rocks - A resource for open web HTML5 developers