In the Group module people can upload files if they're group manager. But the thing is, these files should be restricted to the group and everyone who isn't a member may not see this files.
The problem is they can see the files with the direct url: http://www.site.com/sites/default/.. I've tried the private folder and tweak some permissions with
file_entity but without any result.
Does anyone know how to make files restricted to the group, even if someone access them with the direct url?