The X-Pingback HTTP Header is a URL in the HTTP header that inform other sites where to send a pingback to your site. When other sites mentioned your site/blog post, it will ping and notify your site about it. Pingback can be used in a Denial-of-Service (DOS) attack. This module removes the Pingback header and deactivates all pingback services.
Activate the Remove Pingback HTTP header Module
In the Admin Optimizer page, click to enable the Remove Pingback HTTP header module. Press Save Changes to save the changes.
No configuration is required for this module to work.