Windows installation images do not always contain the latest Microsoft Defender updates. To resolve this issue, Microsoft has released a new security intelligence update (version 1.429.122.0) for Windows 11, Windows 10, and supported Server editions. While it is a minor update, it is crucial for new installations.
Importance of the Defender Update
When users install Windows, they may notice that Defender updates only activate post-setup. The Defender files in installation images can be outdated by weeks or even months, which can expose new systems to known threats. Microsoft emphasizes that this latest update ensures that OS images come with up-to-date malware definitions and binaries, addressing the “protection gap” that occurs during initial boot-up.
This update specifically protects against new threats, including Lumma, an infostealer that has reportedly impacted 394,000 Windows PCs within two months.
Update Details
The updated Defender package includes the following:
- Defender package version: 1.429.122.0
- Platform version: 4.18.25040.2
- Engine version: 1.1.25040.1
- Security intelligence: 1.429.122.0
This update applies to:
- Windows 11
- Windows 10 (Home, Pro, and Enterprise)
- Windows Server 2022, 2019, and 2016
If you plan to upgrade to Windows 11, especially with the new CPU requirements, ensure that your installation media contains these updates.
Notably, while this package improves security, the most recent intelligence version as of now is 1.429.293.0. Thus, users can expect additional updates immediately following the initial setup.
Moreover, Microsoft indicates that this update may also enhance system performance, making it beneficial beyond just security concerns.
Relevant Links
- Microsoft Defender Update for Windows Installation Images
- Microsoft Windows Defender
- Details on Lumma Malware Impact
- New Processor Requirements for Windows 11
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