Prevent Direct Access (PDA) Gold protects unlimited WordPress media files, e.g. PDF & MP4, against Google & unauthorized users.
Demo: https://preventdirectaccess.com
Protect your online content from being copied. Just install add a small plugin on your website and Content Protector for WordPress defend web content from being plagiarized.
Demo: https://codecanyon.net/item/content-protector-for-wordpress-prevent-your-content-from-being-copied/32548460