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customer intent: As a security operations analyst, I want to manage incidents using tasks in the Microsoft Defender portal so that I can improve coll… leads 389 Defender updates

18 May 2026 recorded 2 new, 387 updated Microsoft Defender documentation changes. The most active areas were Endpoint, Office 365, Cloud Apps.

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

389 updates

26

Ai Agent Inventory

Updated

Updated Microsoft Defender documentation in defender-xdr/security-for-ai/ai-agent-inventory.md.

Ai Agent Inventory

Updated

Updated Microsoft Defender documentation in defender-xdr/security-for-ai/ai-agent-inventory.md.

Dex Xdr Permissions

Updated

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

Experts On Demand

Updated

Updated Microsoft Defender documentation in defender-xdr/experts-on-demand.md.

Reports Xdr

Updated

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

Investigate Alerts

Updated

Updated Microsoft Defender documentation in defender-xdr/investigate-alerts.md.

M365d Enable Faq

Updated

Updated Microsoft Defender documentation in defender-xdr/m365d-enable-faq.md.

Manage Incidents

Updated

Updated Microsoft Defender documentation in defender-xdr/manage-incidents.md.

Manage Rbac

Updated

Updated Microsoft Defender documentation in defender-xdr/manage-rbac.md.

Compare Rbac Roles

Updated

Updated Microsoft Defender documentation in defender-xdr/compare-rbac-roles.md.

Entity Page Device

Updated

Updated Microsoft Defender documentation in defender-xdr/entity-page-device.md.

Microsoft Secure Score

Updated

Updated Microsoft Defender documentation in defender-xdr/microsoft-secure-score.md.

Microsoft Xdr Auditing

Updated

Updated Microsoft Defender documentation in defender-xdr/microsoft-xdr-auditing.md.

5

Custom Detection Rules

Updated

Updated Microsoft Defender documentation in defender-xdr/custom-detection-rules.md.

5

Alert Policies

Updated

Updated Microsoft Defender documentation in defender-xdr/alert-policies.md.

M365d Action Center

Updated

Updated Microsoft Defender documentation in defender-xdr/m365d-action-center.md.

2
2

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.

1

Get Started Xdr

Updated

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

1
1
93

Edr In Block Mode

Updated

Updated Microsoft Defender documentation in defender-endpoint/edr-in-block-mode.md.

Raw Data Export Event Hub

Updated

Updated Microsoft Defender documentation in defender-endpoint/api/raw-data-export-event-hub.md.

Raw Data Export Storage

Updated

Updated Microsoft Defender documentation in defender-endpoint/api/raw-data-export-storage.md.

Configure Endpoints Sccm

Updated

Updated Microsoft Defender documentation in defender-endpoint/configure-endpoints-sccm.md.

Configure Machines

Updated

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

Controlled Folders

Updated

Updated Microsoft Defender documentation in defender-endpoint/controlled-folders.md.

Device Control Faq

Updated

Updated Microsoft Defender documentation in defender-endpoint/device-control-faq.md.

Host Firewall Reporting

Updated

Updated Microsoft Defender documentation in defender-endpoint/host-firewall-reporting.md.

Mde Planning Guide

Updated

Updated Microsoft Defender documentation in defender-endpoint/mde-planning-guide.md.

Network Protection Macos

Updated

Updated Microsoft Defender documentation in defender-endpoint/network-protection-macos.md.

User Roles

Updated

Updated Microsoft Defender documentation in defender-endpoint/user-roles.md.

Built In Protection

Updated

Updated Microsoft Defender documentation in defender-endpoint/built-in-protection.md.

Device Control Overview

Updated

Updated Microsoft Defender documentation in defender-endpoint/device-control-overview.md.

Mde Plugin Wsl

Updated

Updated Microsoft Defender documentation in defender-endpoint/mde-plugin-wsl.md.

Discover Local Ai Agents

Updated

Updated Microsoft Defender documentation in defender-endpoint/discover-local-ai-agents.md.

Isolation exclusions

Updated

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

Mac Install With Intune

Updated

Updated Microsoft Defender documentation in defender-endpoint/mac-install-with-intune.md.

Manage suppression rules

Updated

Updated Microsoft Defender documentation in defender-endpoint/manage-suppression-rules.md.

Sign in to Jamf Pro

Updated

Updated Microsoft Defender documentation in defender-endpoint/mac-install-jamfpro-login.md.

URL reputation demonstrations

Updated

Updated Microsoft Defender documentation in defender-endpoint/defender-endpoint-demonstration-smartscreen-url-reputation.md.

6

Troubleshoot Asr Rules

Updated

Updated Microsoft Defender documentation in defender-endpoint/troubleshoot-asr-rules.md.

3
3
2

Api Hello World

Updated

Updated Microsoft Defender documentation in defender-endpoint/api/api-hello-world.md.

Offboard Machine Api

Updated

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

2
1
80

Reports Email Security

Updated

Updated Microsoft Defender documentation in defender-office-365/reports-email-security.md.

Outbound delivery pools

Updated

Updated Microsoft Defender documentation in defender-office-365/outbound-spam-high-risk-delivery-pool-about.md.

Preset Security Policies

Updated

Updated Microsoft Defender documentation in defender-office-365/preset-security-policies.md.

Air About

Updated

Updated Microsoft Defender documentation in defender-office-365/air-about.md.

Air Auto Remediation

Updated

Updated Microsoft Defender documentation in defender-office-365/air-auto-remediation.md.

Mdo Portal Permissions

Updated

Updated Microsoft Defender documentation in defender-office-365/mdo-portal-permissions.md.

Submissions Admin

Updated

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

Campaigns

Updated

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

Quarantine Policies

Updated

Updated Microsoft Defender documentation in defender-office-365/quarantine-policies.md.

Scc Permissions

Updated

Updated Microsoft Defender documentation in defender-office-365/scc-permissions.md.

Connectors Remove Blocked

Updated

Updated Microsoft Defender documentation in defender-office-365/connectors-remove-blocked.md.

Mdo Deployment Guide

Updated

Updated Microsoft Defender documentation in defender-office-365/mdo-deployment-guide.md.

Mdo Email Entity Page

Updated

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

Mdo Usage Card About

Updated

Updated Microsoft Defender documentation in defender-office-365/mdo-usage-card-about.md.

Office 365 Ti

Updated

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

Pim In Mdo Configure

Updated

Updated Microsoft Defender documentation in defender-office-365/pim-in-mdo-configure.md.

Quarantine End User

Updated

Updated Microsoft Defender documentation in defender-office-365/quarantine-end-user.md.

Submissions Teams

Updated

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

Threat Trackers

Updated

Updated Microsoft Defender documentation in defender-office-365/threat-trackers.md.

User Tags About

Updated

Updated Microsoft Defender documentation in defender-office-365/user-tags-about.md.

1
1
1
32

Identity Inventory

Updated

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

Health Alerts

Updated

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

Sensor Settings

Updated

Updated Microsoft Defender documentation in defender-for-identity/sensor-settings.md.

Identity Inventory

Updated

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

Whats New

Updated

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

1
70

Risk Score

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/risk-score.md.

SaaS Security Initiative

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/saas-security-initiative.md.

Configure admin access

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/manage-admins.md.

Applications inventory

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/applications-inventory.md.

Get started with app policies

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/app-governance-app-policies-get-started.md.

Govern discovered apps

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/governance-discovery.md.

Investigate activities

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/activity-filters.md.

Manage app policies

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/app-governance-app-policies-manage.md.

Manage OAuth apps

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/manage-app-permissions.md.

Network requirements

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/network-requirements.md.

Policy Template Reference

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/policy-template-reference.md.

Predefined app policies

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/app-governance-predefined-policies.md.

Use a custom log parser

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/custom-log-parser.md.

Working with the app page

Updated

Updated Microsoft Defender documentation in defender-for-cloud-apps/working-with-app-page.md.

3
3
1
1
5

Manage sites

Updated

Updated Microsoft Defender documentation in defender-for-iot/manage-sites.md.

1
2
11

Security Metrics

Updated

Updated Microsoft Defender documentation in exposure-management/security-metrics.md.

Release notes

Updated

Updated Microsoft Defender documentation in exposure-management/whats-new.md.

Prerequisites

Updated

Updated Microsoft Defender documentation in exposure-management/prerequisites.md.

Review Attack Paths

Updated

Updated Microsoft Defender documentation in exposure-management/review-attack-paths.md.

4
1

Tvm Manage Log4shell Guidance

Updated

Updated Microsoft Defender documentation in defender-vulnerability-management/tvm-manage-Log4shell-guidance.md.

2
10

Identities

Updated

Updated Microsoft Defender documentation in unified-secops-platform/multitenant-identities-inventory.md.

1
1
4

Data sets

Updated

Updated Microsoft Defender documentation in defender/threat-intelligence/data-sets.md.

Searching and pivoting

Updated

Updated Microsoft Defender documentation in defender/threat-intelligence/searching-and-pivoting.md.