Dropbox (the software) can read/write files in Dropbox (the folder).
Doesn't that mean it can also read/write files elsewhere on my Mac?
And doesn't that mean it could read files on my Mac, not in the Dropbox folder,
and write them to Dropbox servers in the cloud
(but not to the master Dropbox folder in the cloud)?
Is there a way to pub the client-side Dropbox software in a "sandbox"
so it has file access only to the local Dropbox folder?
Or a way to monitor what files the Dropbox folder is reading?