[Updated 2019-03-17] Are you wondering why some JavaScript code from external domains simply won’t execute on your website? The reason could be as simple as an overly restrictive Content Security Policy (CSP for short). This article explains how you can create a Content Security Policy that’s both protective and functional. It will help you to secure your web server from some types of cross-site request forgery (XSRF/CSRF/XFS), clickjacking and other code injection attacks.
