Microsoft Copilot (Microsoft 365): New file extension for Copilot pages

🚨 The Signal: Microsoft Copilot pages will now use a new '.page' file extension, identical in functionality and security controls to existing '.loop' files. This change is primarily cosmetic, with no alteration to data governance or security posture.

The Impact

All users and security teams are affected by a cosmetic change, with no direct security risk or change to existing controls.

• End users will see a new file extension and icon for Copilot pages.
• Security teams need no action as existing Purview policies apply automatically.
• Compliance officers are unaffected; data governance remains consistent.
• IT admins will observe the new file type in audit logs and eDiscovery.

Impact: low · Workload: Microsoft Purview