Microsoft Edge: v. 140 - Tab Groups – Auto-Save and Easy Revisit

🚨 The Signal: Microsoft Edge now automatically saves tab groups, preserving user browsing context across sessions. This feature can be controlled by administrators, impacting data retention and potential exposure of browsing activity.

The Impact

All users are affected by automatic tab group saving, which creates a new persistent data artifact that could be relevant for investigations or data leakage.

• End users: Browsing activity is now automatically saved, potentially retaining sensitive information.
• Security teams: New data artifact for browsing history requires consideration for investigations and data handling.
• Admins: Policy control is available to manage the automatic saving of tab groups.
• Compliance teams: Data retention policies may need review to account for persistent tab group data.

The Action

1. Review existing data retention and eDiscovery policies for browsing data.
2. Evaluate the security implications of persistent tab group data within your environment.
3. To disable automatic tab group saving, configure the 'SyncTypesListDisabled' policy with the 'openTabs' data type.
4. Communicate policy changes to end-users regarding browser data persistence.

Domain: M365-Apps · Impact: medium · Workload: M365 Apps