This post follows on from SharePoint Hero Links: What admins/adoption teams need to know? and focuses on the technical difference between legacy sharing links and hero links. To validate what SharePoint is now generating behind the scenes, I adapted my earlier script from Converting SharePoint Sharing Links to Canonical URLs to validate whether Hero link exists or not even there are no unique permissions on the file/folder. The key behaviour change is this: legacy sharing links were typically created only when a user accidentally shared an item (e.