Hello,
"I want to know, is there any way to protect the attachments.
That's good only logged in users can download, but direct download link is visible for logged-in users. They can share/reuse.
How to protect attachments direct link visibility for logged in users.? /Thanks"
Ask same question on WPforo: https://wpforo.com/community/how-to-and-troubleshooting-2/attachment-protection/
Now I purchased "Advanced attachment" addon, enabled "Secure Attachment URLs" this just changed url structure. Still unsafe, logged-in members can copy attachment url and reuse anywhere...