A hotlink occurs when content from your site is embedded on another site, using your bandwidth to serve the files. cPanel allows you to prevent hotlinks to your site. When disabling hotlinks, be sure to allow hotlinking for any necessary domains, such as your website’s subdomains.
Clicking Disable may delete any entries you have added to the list of URLs to allow access. If you are disabling access only temporarily, you may want to save the list so that you can re-enter it later.