Hi @安全 亚信
Welcome to the Microsoft Q&A Platform!
To get the Microsoft Windows Early Launch Anti-Malware (ELAM) Publisher sign:
MVI Membership: Ensure you're part of the Microsoft Virus Initiative (MVI).
Develop ELAM Driver: Create an ELAM driver that meets Microsoft’s requirements.
Submit for Certification: Package your driver and submit it through the Windows Hardware Developer Center.
Get ELAM Sign: Once certified, Microsoft will sign your driver with the ELAM publisher certificate.
For More queries you can refer this links:
https://learn.microsoft.com/en-us/windows-hardware/drivers/bringup/early-launch-anti-malware
https://learn.microsoft.com/en-us/windows-hardware/test/hlk/
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