title: how to block referrerpolicy="no-referrer" in iframe
body: <p>I am running youtube to mp3 converter and people using our iframe API for accessing our API service
  now problem is some people using iframe with <code>referrerpolicy=&quot;no-referrer&quot;</code> tags, so I cant block them
  if I want to block any specific website that not access our API, I m using the following code its working fine <code>RewriteCond %{HTTP_REFERER} ^(http(s)?://([^\.]+\.)?domain\.com) [NC]</code> but when anybody use <code>referrerpolicy=&quot;no-referrer&quot;</code> in iframe I cant block them so I want to know how I can block such a website which using such a tag in there iframe and bypass sandbox</p>