Outlook: Wait on Send for oversharing dialog in New Outlook

🚨 The Signal: New Outlook for Windows now delays email sending until Data Loss Prevention (DLP) policies fully evaluate sensitive content. This prevents accidental oversharing of classified information, enhancing data protection.

The Impact

All users sending emails with sensitive data are affected, reducing the risk of inadvertent data exposure.

• End-users: Reduced risk of accidentally sharing sensitive data externally.
• Security Teams: Enhanced enforcement of data protection policies.
• Compliance Officers: Improved adherence to regulatory data handling requirements.
• Admins: Better control over sensitive information egress.

The Action

1. Review existing Microsoft Purview Data Loss Prevention (DLP) policies for Exchange Online.
2. Ensure DLP policies are configured to detect and restrict oversharing of sensitive information types and labels.
3. Communicate to end-users about potential 'wait on send' delays for sensitive emails in New Outlook.
4. Monitor DLP incident reports for blocked emails to refine policy effectiveness.

Domain: Purview · Impact: high · Workload: Microsoft Purview