G Suite Admins can now Identify externally owned Google Drive files and which folders they reside in in your G Suite domain.
An admin can click on “One Click Report” – External users – Docs
This will show us all external users who have ‘shared in’ Google Drive files into your domain.
By clicking on each of the numbers under the column ‘Owns (not ours)’, the admin will be taken to Drive Audit Files tab where you can examine these Google Drive files in greater detail.
Another way to find all external owned Google documents within your G Suite domain is to open Drive audit and apply a custom filter – show the files which have been shared in. (we excluded deleted/trashed Google docs in this example) because they are included by default.
The result will show all Google docs “Shared in” to your domain and you will be able to view their paths. Since these files are externally owned, you as a G Suite Super admin, your only course of action is to remove and cut the ties to those users they’ve been shared with.
Note: To remove editors and readers from shared in files, there has to be at least one local editor from your Google domain on each of those files.
For each file, you can see the folder or folders that each particular file resides in.
Many files may not have a folder path because they haven’t been added to the local user’s myDrive.
The G Suite Admin can export a Google spreadsheet or a CSV of all shared in file paths by selecting the option ‘with path flattened’. With paths flattened each unique path will be displayed.