Outlook: File tab in Ribbon

🚨 The Signal: Outlook's new File tab simplifies access to account settings and PSTs for new users. This change increases the discoverability of sensitive configuration options and local data files, potentially exposing users to misconfiguration risks.

The Impact

End users are affected by increased visibility of settings, creating a low security risk of misconfiguration or inadvertent PST file exposure.

• End users: Easier access to account settings may lead to unintended changes.
• End users: Simplified PST discovery could expose local data files to unauthorised access.
• Security teams: Increased user access to settings requires vigilance for potential misconfigurations.

The Action

1. Review existing M365 Apps policies for Outlook to ensure desired configurations are enforced.
2. Communicate best practices for managing Outlook settings and PST files to end users.
3. Monitor M365 audit logs for unusual changes to Outlook configurations or PST file access patterns.

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