How to Investigate a Security Alert for a New External Sharing Link

A newly created external sharing link may be an approved collaboration or an unintended exposure of internal files. Link-based access can persist even if the original recipient changes.

What to check

Identify file owner and classification, link scope, expiration and download settings, creator, recipients, access logs, and business purpose. Check whether the link was forwarded or accessed from unexpected locations.

Recommended next step

Revoke an unapproved link, preserve access evidence, and confirm the file’s permissions and recipients. For valid sharing, use named users and an expiry where possible, and review the link after the project ends.

How Informatix Systems can help

Informatix Systems provides security operations and cloud data protection services. We can review the system, trace dependencies, and help plan a practical fix. Contact us with the platform involved, when the issue began, and non-sensitive error details.