Can you source files on BC but not make them downloadable?

[Lucas_J1]

I am using the Google Maps API and sourcing KML files. Client has asked that I not have them accessible to the public. Can you source files with BC and not allow someone to download them via a browser? If not in BC, is there another way to restrict downloads besides Secure Zones? Or can I source a file in a secure zone and not have someone download it? Any suggestions or nudges in the right direction would be greatly appreciated.

[Productive_I_T_]

Could {module_literature} be helpful here?

[Liam Dilley]

Not really as that would put them in the wrapper and thus not be actual files you need for the workings of the map rendering.