Check all files permission when a folder is deleted !
In a SharePoint document library, in Office 365, a user can delete a folder if he has the collaborate rules in it. So it's, but if there is one more files int it without permission for this user, this one can delete the folder and all files ares saved in it.
It's necessary to prevent massive deletion and human error, to inform or block the user, when he delete a folder which contain files with no permission for he.
