Microsoft Purview

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1. changelog Sep 24, 2026 · issue 085

   Purview gains network-layer DLPDLPData Loss Prevention: a category of controls that inspect and block sensitive data from leaving an organisation via email, web, or removable media, giving cyber tools a policy enforcement layer over data in motion and at rest. for shadow AI, eDiscoveryeDiscoveryA legal process for identifying, collecting, and producing electronically stored information in response to litigation or investigation; cyber tools integrate with it to extract and preserve forensic evidence in legally defensible formats. for Copilot content, selective SharePoint archiving, and Priority Cleanup.⁠︀︄︇︀︅︉︀︅︀︀︃︀︀︅︅︀︅︊︀︄︆︀︃︄⁠

   └──▷ HOW TO FIND IT
   Remove stale Teams recordings from Copilot indexing and eDiscovery to reduce AI data sprawl in regulated environments.
   📍In the Microsoft Purview compliance portal, go to Data Lifecycle Management › Priority Cleanup, create a new cleanup policy targeting Teams recordings and transcripts, obtain approval, and execute to permanently delete the content from SharePoint search, eDiscovery, and Microsoft 365 Copilot.
   Archive inactive SharePoint content site-selectively to drop it from Copilot indexing while keeping it under retention and legal hold.
   📍In the Microsoft Purview compliance portal, go to Data Lifecycle Management › SharePoint archiving, select the target content (not the full site), apply the archive action, and confirm the content remains discoverable in eDiscovery but excluded from Microsoft 365 Copilot indexing until reactivated.
   • Adds network-layer data loss prevention via Microsoft Purview and Microsoft Entra Global Secure Access (now generally available), enforcing context-aware classification policies at the network layer to block sensitive files and text from reaching unsanctioned AI tools, covering both human and on-behalf-of (OBO) agentic traffic.⁠︀︄︇︀︅︉︀︅︀︀︃︀︀︅︅︀︅︊︀︄︆︀︃︄⁠
   • Extends Microsoft Purview eDiscovery to support search, hold, review, and export of content in user-owned SharePoint embedded containers, enabling investigators to find content from Microsoft Loop, Copilot Pages, Copilot Notebooks, Outlook newsletters, and other apps mapped to a user without needing the container URL from a SharePoint administrator.
   • Adds an optional HTML conversion in eDiscovery export to produce a more human-readable version of content for downstream legal tools.
   • Enables administrators in Microsoft Purview Data Lifecycle Management to archive inactive SharePoint content at the individual-content level without archiving the entire site, keeping archived content subject to retention, legal hold, and eDiscovery while removing it from Microsoft 365 Copilot indexing until reactivated.
   • Adds Priority Cleanup in Microsoft Purview Data Lifecycle Management to permanently delete approved content — including stale Teams recordings and transcripts — removing it from eDiscovery, SharePoint search, and Microsoft 365 Copilot indexing.

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   • Scales Purview auto-labeling policy simulations to support up to 20 million items and up to 50,000 sites through adaptive scopes.
   • Allows administrators to edit an auto-labeling policy without re-running simulation.
   • Adds audit insights and reporting for auto-labeling policies, showing policy coverage and processing activity.
   • Adds network-layer data loss prevention via Microsoft Purview and Microsoft Entra Global Secure Access (now generally available), enforcing context-aware classification policies at the network layer to block sensitive files and text from reaching unsanctioned AI tools, covering both human and on-behalf-of (OBO) agentic traffic.⁠︀︄︇︀︅︉︀︅︀︀︃︀︀︅︅︀︅︊︀︄︆︀︃︄⁠
   • Extends Microsoft Purview eDiscovery to support search, hold, review, and export of content in user-owned SharePoint embedded containers, enabling investigators to find content from Microsoft Loop, Copilot Pages, Copilot Notebooks, Outlook newsletters, and other apps mapped to a user without needing the container URL from a SharePoint administrator.
   • Adds an optional HTML conversion in eDiscovery export to produce a more human-readable version of content for downstream legal tools.
   • Enables administrators in Microsoft Purview Data Lifecycle Management to archive inactive SharePoint content at the individual-content level without archiving the entire site, keeping archived content subject to retention, legal hold, and eDiscovery while removing it from Microsoft 365 Copilot indexing until reactivated.
   • Adds Priority Cleanup in Microsoft Purview Data Lifecycle Management to permanently delete approved content — including stale Teams recordings and transcripts — removing it from eDiscovery, SharePoint search, and Microsoft 365 Copilot indexing.

   3 more in Everything

2. changelog Aug 27, 2026 · issue 058

   Microsoft Purview auto-labeling policies now process up to 500,000 SharePoint and OneDrive files per day, up from 100,000.

3. changelog Jul 30, 2026 · issue 031

   Microsoft Purview gains network-layer DLPDLPData Loss Prevention: a category of controls that inspect and block sensitive data from leaving an organisation via email, web, or removable media, giving cyber tools a policy enforcement layer over data in motion and at rest. for SaaSSaaSSoftware delivered over the internet and run on the provider's infrastructure, so the buyer pays a subscription instead of installing or operating anything locally./AI apps, Copilot email controls, and a unified Insider Risk alert triage experience.

   └──▷ HOW TO FIND IT
   Block uploads of sensitive data to shadow AI apps at the network layer without deploying third-party proxies.
   📍In the Microsoft Purview portal, go to Data Loss Prevention › Policies › Create policy, select the Microsoft Entra Internet Access scope, define a condition for sensitive info types, and set the action to Block for unmanaged cloud and AI app destinations.
   Prevent Copilot from using external emails as grounding data to keep AI responses anchored to vetted internal content.
   📍In the Microsoft Purview portal, go to Data Loss Prevention › Policies › Create policy, choose Microsoft 365 Copilot as the location, add a condition for Sender is external, and set the action to exclude matched emails from Copilot grounding.
   • Integrates with Microsoft Entra Internet Access to extend data loss prevention to the network layer, detecting and blocking sensitive data shared with unmanaged cloud and AI apps in real time.
   • New DLP policy for Microsoft 365 Copilot (preview) lets admins exclude external-sender emails from being referenced, summarized, or used as grounding data in Copilot responses.
   • New centralized Insider Risk Management alert experience consolidates agentic alert triage, enriched user details, case notes, and combined classic/agent filtering into a single view.
   • Data Security Triage Agent's advanced AI reasoning layer — performing multi-step analysis across user, device, and data activity signals — is now generally available.

   4 details in Everything