Microsoft Defender Antivirus security intelligence - March-2025 (Platform: 4.18.2503

[harlan4096]

Microsoft Defender Antivirus security intelligence and product updates - Microsoft Defender for Endpoint

Manage how Microsoft Defender Antivirus receives protection and product updates.learn.microsoft.com 

March-2025 (Platform: 4.18.25030.2 | Engine 1.1.25030.1)​

• Security intelligence update version: 1.427.3.0
  
• Release date: April 1, 2025 (Engine) / April 9, 2025 (Platform)
  
• Platform: 4.18.25030.2
  
• Engine: 1.1.25030.1
  
• Support phase: Security and Critical Updates
  

What's new​

• Improved caching of device control settings to improve reliability in occasionally connected environments.
  
• Performance improvement in on-access scans of files in network locations.
  
• Fixed the Defender service description to match the latest installed version.
  
• Improved Defender engine update logic when the update is included in a custom image.
  
• Fix in health reporting where signature update data might have been incorrect.
  
• Fixed reporting issue with controlled folder access (CFA) protected folders using the PowerShell cmdlet Get-MpPreference when CFA is disabled.
  
• Improved performance when scanning UPX-packed files (Ultimate Packer for eXecutables) and updated the validation process to verify the integrity of the packed file itself.
  
• Added support for distinguishing regular cloud allow signatures from clean Indicators of Compromise (IoC) in attack surface reduction (ASR).