Outlook: Enhanced Search Experience in Win32

🚨 The Signal: Outlook's new AI search summary in Copilot can expose sensitive information from emails and files if not properly governed. This introduces new data leakage risks via AI summarization.

The Impact

All users are affected, with the primary risk being the inadvertent exposure of sensitive data through AI summarization and chat interactions.

• End users: Risk of over-reliance on AI summaries, potentially missing critical details or misinterpreting sensitive information.
• Security teams: Increased risk of data leakage and exfiltration through AI-generated content and chat history.
• Compliance teams: New challenges in auditing and ensuring sensitive data is not inadvertently summarized or exposed by AI.
• Admins: Need to review and potentially adjust data loss prevention (DLP) policies to account for AI summarization capabilities.

The Action

1. Review and update existing Microsoft Purview Data Loss Prevention (DLP) policies to include Copilot interactions and AI-generated content.
2. Implement or refine sensitivity labels in Microsoft Purview to ensure sensitive emails and files are appropriately classified and protected.
3. Educate end-users on the responsible use of AI search summaries, emphasizing verification of information and avoiding input of highly sensitive data into Copilot chat.
4. Monitor Microsoft 365 audit logs for Copilot activity, focusing on data access and sharing patterns related to AI summaries.
5. Evaluate Microsoft Entra Conditional Access policies for Copilot access, especially for users handling sensitive information.

Domain: Agentic-AI · Impact: high · Workload: M365 Apps