Outlook: Purview DLP Wait-on-Send Support for Mac

🚨 The Signal: Outlook for Mac now supports Purview DLP wait-on-send, enforcing policy evaluation before emails are sent. This enhances data exfiltration prevention by ensuring sensitive information is inspected prior to leaving the organisation.

The Impact

Security teams and end-users are affected, reducing the risk of sensitive data exfiltration from macOS devices.

• Security Teams: Enhanced control over data exfiltration on macOS.
• End-users: Potential minor delays when sending emails with sensitive content.
• Compliance Officers: Improved adherence to data protection regulations.
• Incident Responders: Fewer data loss incidents originating from Mac endpoints.

The Action

1. Review existing Microsoft Purview DLP policies for 'wait-on-send' configurations.
2. Create or update DLP policies to include 'wait-on-send' for Exchange Online locations.
3. Ensure policies are scoped to relevant users and groups utilising Outlook for Mac.
4. Communicate potential send delays to Outlook for Mac users.
5. Monitor DLP reports for policy matches and user overrides.

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