To verify if a file is still shared externally, you need to check its current access permissions. External sharing means granting people outside your organization's security domain (like partners, clients, or the public) access to the file via a link or direct invitation. This differs from internal sharing, where only authorized company users have access. Verification typically involves reviewing the file's active sharing links and the list of individuals with whom it's explicitly shared.

Specific methods depend on the storage platform. In cloud services like Microsoft OneDrive/SharePoint or Google Drive:

1. Open the file's properties or sharing settings. Look for active links labeled as "Anyone with the link" or "External users." Review expiration dates if set.
2. Check the direct invite list within sharing settings. Identify any individuals with email addresses from domains not associated with your organization. Admins can also use central audit logs to track sharing history.

Regularly verifying external shares is crucial for security and compliance, preventing unintended data leaks. However, the process can be manual, especially with many files or decentralized management. Future developments focus on automated monitoring and AI alerts for risky shares, improving adoption by reducing the burden of manual checks.