mcmwebsol

Protects uploaded files so they can only be viewed by logged-in users
This plugin does not work with the media library. It only protects files uploaded through the plugin itself.
Requires a web server that supports .htaccess files for access control, such as Apache on Linux. Please note that even Apache on Linux 
disables .htaccess files in newer versions in some configurations, so please check to make sure your files aren’t publicly accessible. 
You can test that your files are protected by using the wp-content/uploads/ path or 
 by using the “Test link security” link on the “List all protected uploads” page. You should receive a 403 Forbidden error 
 if it’s working correctly.
This plugin does not collect any private data itself though it’s possible logged-in users may upload private data to your website using this plugin.
PRO SUPPORT 
While we attempt to provide basic support for this plugin here on the WordPress.org forums, for advanced or priority support please use the pro version. 
The <a href="https://www.mcmwebsite.com/mcm-protected-file-view-pro/" rel="nofollow ugc">pro version</a> also adds per user role file permissions, so, for instance, you can have a file that’s only accessible to a premium role, while not accessible to a basic role.

MCM Protected File View

Protects uploaded files so they can only be viewed by logged-in users

MCM Protected File View vs Iptanus File Upload