Outlook: External tag in contact suggestions

🚨 The Signal: Outlook will now display an 'External' tag on contact suggestions when composing emails. This helps users identify external recipients, reducing the risk of accidental information disclosure to unintended parties outside the organisation.

The Impact

All users are affected, with a reduced risk of misdirected emails containing sensitive information.

• End Users: Reduced risk of sending sensitive data externally by mistake.
• Security Team: Improved data loss prevention posture through user awareness.
• Compliance Officers: Easier demonstration of controls for information handling.

Domain: Exchange · Impact: low · Workload: Exchange Online