I'm considering moving some company data from our on-premise file shares to dropbox/box/google drive storage services, the only consideration now is security. Is it possible to give our employees the ability to always see that data exists on the service but block access to it if is done after work hours?
To be more specific, assuming I have file "x.png" in my company's shared Dropbox folder, I want users to always be able to see that "x.png" exists but if the attempted access is after work hours I want to give the user some kind of notification "File is not accessible" and maybe also log the attempt.
Thanks