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RM561892Microsoft Purview: Data Loss Prevention for Microsoft 365 Copilot to safeguard prompts for government clouds

Summary

We are expanding Microsoft Purview DLP for Microsoft 365 Copilot to safeguard prompts containing sensitive data. This real-time control helps organizations mitigate data leakage and oversharing risks by preventing Microsoft 365 Copilot and Copilot Chat from returning a response when prompts contain sensitive data or using that sensitive data for grounding in Microsoft 365 or the web.

Description

We are expanding Microsoft Purview DLP for Microsoft 365 Copilot to safeguard prompts containing sensitive data. This real-time control helps organizations mitigate data leakage and oversharing risks by preventing Microsoft 365 Copilot and Copilot Chat from returning a response when prompts contain sensitive data or using that sensitive data for grounding in Microsoft 365 or the web.

GA date: June CY2026

Version history

4 versions tracked

Updated 3 times since May 11, 2026. Microsoft 365 Message Center only shows the current version; this archive preserves tracked history.

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  1. Aug 10, 2026 - 10:43 PMLatest - v4

    Changed: Tags, Status

  2. Jul 29, 2026 - 11:07 PMv3

    Changed: Body

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  3. Jul 8, 2026 - 11:11 PMv2

    Changed: Tags, Status

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  4. May 11, 2026 - 11:15 PMOriginal - v1

    Changed: Initial version

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