Files deleted by people without permissions
So,
I got a very sensitive data shared in Creative Cloud for workers in my publishing house. The files are used daily by about 100 people. From about a month - somehow (without my any interference) they got permission to edit and delete files. And a few times - somebody deleted them, what's very (very!) bad for others.
BUT
I am the only folder administrator. So they should only delete them from their local drives, not from the Cloud.
What's going on? What can I do, to check why they have permissions they shouldn't have?
