What is Content-Security-Policy (CSP)?

Content-Security-Policy (CSP) directives are in-depth controls that can be used to protect against code injection. It requires a website to be designed or refactored with CSP in mind.

• Assessed Directives
• Goals
• Implementation

When used, their presence indicates a company has a good cyber security posture. A properly configured Content-Security-Policy (CSP) can help prevent cross-site scripting (XSS) attacks by restricting the origins of JavaScript, CSS, and other potentially dangerous resources.

The absence of CSP directives does not automatically make a website or service exploitable.

Required for:

• HTTP/1.1
• HTTP/1.0

Resources

• Mozilla: Content-Security-Policy
• W3 “Content Security Policy Level 2” December 15, 2016