Defender
Everything ChangeIntel collected about Defender from 22 sources, on one timeline.
Sources for Defender
- Microsoft Defender for Office 365 what's newlatest 1 Sep
- Microsoft Defender for Cloud release noteslatest 1 Sep
- Microsoft Defender XDR what's newlatest 1 Sep
- Microsoft Defender for Identity what's newlatest 1 Sep
- Microsoft Defender for Cloud Blogquiet since 3 Aug
- Microsoft Defender XDR Bloglatest 23 Sep
- Microsoft Defender for Cloud Apps release notesquiet since 1 Aug
- Microsoft Defender Antivirus updateslatest 29 Sep
14 more sources mention Defender
- Microsoft 365 Roadmaplatest 1 Sep
- Jeffrey Appellatest 21 Sep
- CISA Known Exploited Vulnerabilitieslatest 20 May
- Microsoft Intune what's newlatest 28 Sep
- Microsoft Sentinel what's newlatest 1 Aug 2025
- MSRC CVE details (CVRF API)latest 11 Aug
- Microsoft Security Bloglatest 23 Sep
- Azure Updateslatest 1 Sep
- Core Infrastructure and Security Bloglatest 14 Jul
- Microsoft Entra what's newlatest 1 Jun
- Microsoft Purview what's newlatest 1 Aug
- Microsoft Security Community Bloglatest 27 Jul
- Office 365 for IT Pros (Tony Redmond)latest 4 Aug
- Windows message centerlatest 27 Apr
22Changes in the last 30 days
0Open known issues
0Deadlines in the next 90 days
0Revised by Microsoft · 30 days
10Roadmap items in progress
Watching for changes since 26 Sep 2026. Revisions Microsoft made before then were not observed, which does not mean there were none.
Defender timeline
8 weeks back, 6 ahead · mark size shows importance, not volume- Release or post
- Known issue
- Out-of-band, exploited, or incident
- Changed by Microsoft
- Deadline
Releases & versionsKBs · versions · tool releases
1 changeRoutine only
SecurityMSRC · CISA KEV · security news
- Mon 3 Aug · Security news: Microsoft Defender for Cloud Customer Newsletter
- Wed 5 Aug · Security news: Monthly News-August 2026
- Tue 1 Sep · Security news: Stop identity attacks before they start with Microsoft ISPM recommendations
- Thu 10 Sep · Security news: Detect and disrupt AI-themed attacks with Microsoft Defender
- Thu 17 Sep · Security news: Improving email security outcomes with real-world Microsoft Defender insights
- Wed 23 Sep · Security news: Integrated Security Operations Center in Microsoft Defender and 2 more
6 changesRoutine only
RoadmapMicrosoft 365 roadmap
- Tue 4 Aug · Roadmap entry: Microsoft Defender for Office 365: Localized Default Mark and Notify Email Template
- Mon 17 Aug · Roadmap entry: Microsoft Purview: Data Loss Prevention - Data Security Triage Agent summaries and categorizations for DLP alerts will be made available in DLP Alerts in Microsoft Defender XDR
- Wed 26 Aug · Roadmap entry: Microsoft Defender for Office 365: Full Submissions experience in GCC
- Tue 1 Sep · Roadmap entry: Microsoft Defender for Identity: Unified identity timeline on the Identity page
1 changeRoutine only
News & announcementsBlogs · what's new pages
- Tue 25 Aug · Product news: Audit mode for the Microsoft Defender Antivirus template for Linux and 1 more
- Tue 1 Sep · Azure update: [Launched] Generally Available: Microsoft Defender for Cloud support for Azure Container Apps (Serverless Containers Posture) and 10 more
- Mon 28 Sep · Product news: Automatically launch Microsoft Defender for Endpoint during Android Enterprise device setup
12 changesRoutine only
CommunityPractitioner blogs
- Mon 3 Aug · Community post: Microsoft Defender Threat Intelligence: Native Defender Integration and API Access
- Tue 4 Aug · Community post: Microsoft Defender for Office 365 Blocks Prompt Injections
- Thu 20 Aug · Community post: Auditing Microsoft Defender and Intune Configuration Changes
- Wed 9 Sep · Community post: Microsoft Defender XDR Attack Disruption: Automatic Device Isolation Explained
- Mon 21 Sep · Community post: How to track browser extension installations with Microsoft Defender
2 changesRoutine only
Dates & retirementsLifecycle · retirement notices
Nothing new
Dates ahead
End of support, retirements, and CISA deadlines · next 12 monthsRoadmap in progress
In development or rolling out, by target month- Microsoft Defender for Office 365: False positive email release from Quarantine through threat explorer, email summary panel, advanced hunting, and custom detection email entity page take action Rolling out · target July CY2024 (passed) · ID 184915
- Microsoft Defender for Office 365: Additional actions include submit, allow/block, and trigger AIR from Advanced Hunting. In development · target June CY2025 (passed) · ID 488095
- Microsoft Defender for Office 365: Overview dashboard In development · target July CY2025 (passed) · ID 497548
- Microsoft Purview | Compliance Manager: Microsoft Defender for Cloud (MDC) integration In development · target December CY2025 (passed) · ID 167331
- Microsoft Purview: Data Security Investigations – Introducing integration with Data Security Posture Management and deepening integration with Defender XDR, Insider Risk Management In development · target February CY2026 (passed) · ID 518226
- Microsoft Defender for Office 365: Admins can hunt on calls in Microsoft Teams In development · target March CY2026 (passed) · ID 531761
4 more on the Microsoft 365 roadmap.
Versions and releases
Current public releases- Microsoft Defender Antivirus · Security intelligence 1.459.459.0 · 29 Sep 2026
- Microsoft Defender Antivirus · Platform 4.18.26080.4
- Microsoft Defender Antivirus · Engine 1.1.26080.3
Nothing about Defender yet in: threads across sources, revisions by Microsoft, open known issues.