The Permissions Policy Header allows site owners to enable and disable certain web platform features on their own pages and those they embed. Being able to restrict the features your site can use is really nice but being able to restrict features that sites you embed can use is an even better protection to have." The Permissions Policy is just a rename of the "Feature Policy" header from a few years ago.gives you control over what site path information is passed along to other sites when you visitors click an external link.
The Content Security Policy Header is like the guest list at a party with very important guest who require protection against threats. Absolutely nobody gets in unless they're preapproved to be let in. Use the Content Security Policy Header to protect your Joomla site from the cross-site scripting (XSS) vulnerability.
If you display your email address(s) in plain sight on Joomla sites is is safe from being farmed by bots who collect email addresses for spammers? It is if you use the core "Content - Email Cloaking" plugin or even better yet "Email Protector" from Regular Labs. In this video we'll see how to hide email addresses from spammers.