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Day in brief

Security Copilot M365d Incident Summary leads 116 Defender updates

16 April 2026 recorded 2 new, 114 updated Microsoft Defender documentation changes. The most active areas were Defender XDR, Office 365, Endpoint.

This period briefing was assembled from the tracked Microsoft Learn and Message Center changes.

116 updates

21
20

Autoad Results

Updated

Updated Microsoft Defender documentation in defender-xdr/autoad-results.md.

Autoad Results

Updated

Updated Microsoft Defender documentation in defender-xdr/autoad-results.md.

Whats New

Updated

Updated Microsoft Defender documentation in defender-xdr/whats-new.md.

Start Using Mdex Xdr

Updated

Updated Microsoft Defender documentation in defender-xdr/start-using-mdex-xdr.md.

Reports Xdr

Updated

Updated Microsoft Defender documentation in defender-xdr/reports-xdr.md.

M365d Autoir Actions

Updated

Updated Microsoft Defender documentation in defender-xdr/m365d-autoir-actions.md.

Whats New

Updated

Updated Microsoft Defender documentation in defender-xdr/whats-new.md.

Whats New

Updated

Updated Microsoft Defender documentation in defender-xdr/whats-new.md.

4

Dex Xdr Overview

Updated

Updated Microsoft Defender documentation in defender-xdr/dex-xdr-overview.md.

Get Started Xdr

Updated

Updated Microsoft Defender documentation in defender-xdr/get-started-xdr.md.

3
1
18

Offboard Machines

Updated

Updated Microsoft Defender documentation in defender-endpoint/offboard-machines.md.

Add A New Scan Definition

Updated

Updated Microsoft Defender documentation in defender-endpoint/api/add-a-new-scan-definition.md.

Managing Exclusions

Updated

Updated Microsoft Defender documentation in defender-endpoint/managing-exclusions.md.

Linux Install Manually

Updated

Updated Microsoft Defender documentation in defender-endpoint/linux-install-manually.md.

Linux Resources

Updated

Updated Microsoft Defender documentation in defender-endpoint/linux-resources.md.

Switch To Mde Phase 2

Updated

Updated Microsoft Defender documentation in defender-endpoint/switch-to-mde-phase-2.md.

5
33

Submissions Admin

Updated

Updated Microsoft Defender documentation in defender-office-365/submissions-admin.md.

Mdo Email Entity Page

Updated

Updated Microsoft Defender documentation in defender-office-365/mdo-email-entity-page.md.

Submissions Admin

Updated

Updated Microsoft Defender documentation in defender-office-365/submissions-admin.md.

Submissions Teams

Updated

Updated Microsoft Defender documentation in defender-office-365/submissions-teams.md.

Defense In Depth Guide

Updated

Updated Microsoft Defender documentation in defender-office-365/step-by-step-guides/defense-in-depth-guide.md.

Review Allow Entries

Updated

Updated Microsoft Defender documentation in defender-office-365/step-by-step-guides/review-allow-entries.md.

Step By Step Guide Overview

Updated

Updated Microsoft Defender documentation in defender-office-365/step-by-step-guides/step-by-step-guide-overview.md.

1
1
6

Whats New

Updated

Updated Microsoft Defender documentation in defender-for-identity/whats-new.md.

Health Alerts

Updated

Updated Microsoft Defender documentation in defender-for-identity/health-alerts.md.

Whats New

Updated

Updated Microsoft Defender documentation in defender-for-identity/whats-new.md.

Whats New

Updated

Updated Microsoft Defender documentation in defender-for-identity/whats-new.md.

Whats New

Updated

Updated Microsoft Defender documentation in defender-for-identity/whats-new.md.

Whats New

Updated

Updated Microsoft Defender documentation in defender-for-identity/whats-new.md.

2
1

Mto Workbooks

Updated

Updated Microsoft Defender documentation in unified-secops-platform/mto-workbooks.md.