It's not just a single file that you have been invited to access. This 'someone' has told the world that all of their public documents are in this filing cabine

It's not just a single file that you have been invited to access. This 'someone' has told the world that all of their public documents are in this filing cabinet. And here is how to find a few specific files. It's not a stretch to think the every other file in the (unlocked) cabinet is also public.