GD Security Toolbox Pro 2.0: Hades
GD Security Toolbox Pro 2.0 is a major update to the plugin with several new addons included (total of 14 now), huge changes to some parts of the plugin, many more new features, updates and fixes.
Security related HTTP Headers, Part 3: Content Security Policy
Content Security Policy (or CSP) is very complex and powerful security-related HTTP header, that might be complex to implement, but essential in limiting what browser is allowed to load when browsing your website.
Security related HTTP Headers, Part 2: Referrer Policy
Referrer Policy is a new HTTP header drafted in 2015, implemented last year. This header controls referrer header value browser sends when the user is navigating away from your website pages.
Security related HTTP Headers, Part 1: Introduction
Response to each request made to the server from the client side (browser) returns the content and the special block with HTTP response headers containing various information about the content.