Working with secure file storages¶
After the file storages have been configured, the editor can work normally in the File List module.
To secure individual folders, the editor has two options:
in the folder tree by right-clicking on the folder -> Edit Access
in the module itself via the Edit access button
To enable access restrictions only add the frontend user groups, you want to give access. This is default TYPO3 behaviour.

After enabling access to specific groups or "Show at any login", the tree shows the set up access to the folder.

Now you are able to use files as you are working with standard fileadmin. Just include them in your content elements and so on. This extension cares about the correct access and answers with 403 - Auth required, if no access is given.
Feel free to add an 403 error handler to your site configuration to handle access.