Microsoft Copilot (Microsoft 365): Self-serve sync connectors

🚨 The Signal: Users can now connect external data sources like Jira and Confluence to Microsoft 365 Copilot using their own credentials. This expands Copilot's data access, increasing the attack surface and requiring careful data governance.

The Impact

All users are affected by expanded data access, increasing the risk of unauthorized data exposure and exfiltration via Copilot.

• End Users: Risk of oversharing sensitive external data through Copilot.
• Admins: Increased complexity in managing data access and preventing exfiltration.
• Security Teams: New vectors for data loss and unauthorized information disclosure.
• Compliance Teams: Challenges in maintaining data sovereignty and regulatory compliance.

The Action

1. Review and configure tenant-level controls for Copilot self-serve sync connectors, including staged rollout and visibility management.
2. Implement data loss prevention (DLP) policies specifically for Copilot interactions with external data sources.
3. Educate users on responsible data sharing and the implications of connecting external services to Copilot.
4. Regularly audit Copilot connector usage and data access logs for anomalous activity.
5. Update data governance frameworks and policies to explicitly address external data ingestion by Copilot.

Domain: Agentic-AI · Impact: high · Workload: Microsoft Purview