Microsoft printed a brand new Defender replace when it launched its October 2024 Patch Tuesday (it didn’t launch any in November.) This replace bundle is important as a Home windows set up picture might include previous, outdated anti-malware definitions and software program binaries. Apart from higher safety, these updates may present improved efficiency advantages in some instances.

Microsoft delivered the most recent safety definitions for Home windows pictures through safety intelligence replace model 1.419.396.0. The Defender bundle model can be the identical. Microsoft additionally printed a hyperlink to its detailed steerage concerning the current NPD knowledge breach which leaked SSNs, home addresses, and extra, of over 150 million individuals.

Within the help doc describing the brand new replace, Microsoft explains:

The primary hours of a newly put in Home windows deployment can go away the system weak due to a Microsoft Defender safety hole. It is because the OS set up pictures might include outdated antimalware software program binaries.

[..] Gadgets utilizing both the Home windows built-in antivirus or one other safety answer can profit from these updates. Defender updates additionally include crucial efficiency fixes that may enhance the consumer expertise.

[..] This text describes antimalware replace bundle for Microsoft Defender within the OS set up pictures (WIM and VHD recordsdata). This characteristic helps the next OS set up pictures:

• Home windows 11
• Home windows 10 (Enterprise, Professional, and House editions)
• Home windows Server 2022
• Home windows Server 2019
• Home windows Server 2016

Model info

• Defender bundle model: 1.419.396.0

This bundle updates the anti-malware shopper, anti-malware engine, and signature variations within the OS set up pictures to following variations:

• Platform model: 4.18.24090.11
• Engine model: 1.1.24090.2
• Safety intelligence model: 1.419.396.0

From Microsoft’s safety bulletin, we study that the safety intelligence replace model 1.419.396.0 was launched final month. It provides risk detections for numerous backdoor exploits, trojans, amongst others. For these questioning, the most recent intelligence replace is model 1.421.573.0 on the time of writing.