Find notable cyber news and cases, enriched with sources, timelines, and signals.
Home Browse News Feed Stats Watchlists Beta About Contact

Microsoft expands Purview DLP enforcement for Copilot across local and cloud Office files

Security Tool/Service
First reported
Last updated
Happening score
H score 10
1 unique sources, 1 articles

Summary

Hide ▲

Microsoft is expanding Purview DLP so Microsoft 365 Copilot cannot process restricted Word, Excel, and PowerPoint files stored on local devices, SharePoint, or OneDrive. The rollout closes a protection gap that previously left local Office files outside DLP enforcement and matters because it standardizes Copilot access controls across storage locations.

Related Happenings

Microsoft Windows 11 KB5079473 Microsoft account sign-in disruption

Service Disruption
First: 20.03.2026 09:33 Last: 20.03.2026 09:33 Sources 1

About this happening: **Microsoft**'s **Windows 11 KB5079473** update is disrupting **Microsoft account sign-ins** across multiple apps, creating false **no-internet** errors and blocking normal access...

Latest development: 23.03.2026 10:04

Microsoft started rolling out the KB5085516 optional out-of-band update to fix the Microsoft account sign-in bug that appears after KB5079473 on Windows 11 25H2 and 24H2. The update addresses the false no-internet sign-in failure affecting Microsoft Teams, OneDrive, Microsoft Edge, Microsoft 365 Copilot, Excel, and Word, and it is available through Windows Update or the Microsoft Update Catalog.

Open Happening

Microsoft KB5084597 hotpatch for Windows 11 RRAS RCE flaws

Security Patch Release
First: 14.03.2026 23:48 Last: 14.03.2026 23:48 Sources 1

About this happening: **Microsoft** released **KB5084597** as an **out-of-band hotpatch** for **Windows 11 Enterprise** devices, closing **RRAS remote-code-execution** flaws that affect hotpatch-manage...

Open Happening

Windows Autopatch enables hotpatch security updates by default for eligible devices

Security Tool/Service
First: 11.03.2026 11:15 Last: 11.03.2026 11:15 Sources 1

About this happening: Microsoft is changing **Windows Autopatch** to enable **hotpatch security updates** by default, speeding security-fix rollout for eligible devices and reducing restart-related del...

Open Happening

Microsoft March 2026 Patch Tuesday (83 CVEs)

Security Patch Release
First: 11.03.2026 03:08 Last: 11.03.2026 03:08 Sources 1

About this happening: **Microsoft** released its **March 2026 Patch Tuesday** update with **83 CVEs** across its product range, reducing exposure to a broad set of flaws that includes issues Microsoft...

Open Happening

Microsoft security patch release for CVE-2026-21262

Security Patch Release
First: 10.03.2026 19:49 Last: 10.03.2026 19:49 Sources 1

About this happening: **Microsoft's March 2026 Patch Tuesday** delivers fixes for **79 flaws**, including **2 publicly disclosed zero-days** and several **Critical** issues across **SQL Server**, **.NE...

Open Happening

Timeline

  1. 24.02.2026 19:30 1 articles · 3mo ago

    Microsoft 365 Copilot Chat work-tab bug discovered

    Technical Analysis Update

    Microsoft 365 Copilot Chat work-tab functionality was first discovered on January 21 to mistakenly access and summarize confidential emails in users' Sent Items and Drafts folders, including messages labeled confidential and intended to be protected by active data loss prevention policies.

    Show sources
    Open in new tab
  2. 24.02.2026 19:30 2 articles · 3mo ago

    Microsoft expands Copilot DLP to local and cloud Office files

    Mitigation Patch Update

    Microsoft announced that Purview DLP will block Microsoft 365 Copilot from processing restricted Word, Excel, and PowerPoint documents stored on local devices, SharePoint, or OneDrive, with deployment planned through AugLoop between late March and late April 2026 and automatic enablement for organizations already configured to block Copilot from sensitivity-labeled content.

    Show sources
    Open in new tab