See Unlisted Videos Youtube Extension

: It cannot "hack" YouTube's privacy to show truly private or secret unlisted videos. It can only find videos whose links have already been posted somewhere on the web or added to public playlists.

: If a video was originally public and later changed to unlisted, you can often find the link by searching the channel's URL on the Internet Archive ⚠️ Critical Security Warning see unlisted videos youtube extension

"Unlisted" simply means the video is hidden from search results and channel pages; anyone with the direct link can still view it. If you want a video to be completely private, you must set it to Private , which restricts access to specific invited users only. : It cannot "hack" YouTube's privacy to show