Stealth Extranet for SharePoint (EFS) allows users to securely share documents and folders from SharePoint with external users without granting them access to the SharePoint environment. The recipient receives a one-time PIN code via two-factor authentication after registering and can then access the shared content. Access permissions and an audit trail are maintained for compliance. EFS resides on a separate server in the DMZ to further isolate external users and uses encryption to securely transfer data.