Additional Microsoft Defender tools and services that provide security across various platforms and environments
The latest security intelligence update is:
- Version: 1.459.601.0
- Engine Version: 1.1.26080.3
- Platform Version: 4.18.26080.4
- Released: 10/8/2026 1:31:47 PM
- Documentation: Release notes
This page says 1.459.601.0 was released on 10/7/2026.
Antimalware updates change log - Microsoft Security Intelligence
So, no update yet for October 8 I think.
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