In Florbs File Security for Google Drive, when you see external domains that have access to your organization’s files, you have two main options to remove that access:
Remove link sharing
This means that if any files or folders are shared via a link ("Anyone in the domain with the link"), the link will not be active any longer.
When we talk about sharing with link, this is what we mean:
Remove sharing with users and groups
If someone in your organization explicitly shared a file or folder with users or groups in an external domain (e.g., john@competitorcompany.com), that access will be revoked.
When we talk about sharing with users and groups, this is what we mean:
Key Difference:
Removing link sharing stops users from accessing files via shared links.
Removing sharing with users/groups directly removes specific people or groups from the file’s permissions.