Microsoft Windows: System Guard Secure Launch and SMM protection

[I think this documentation is new. Maybe the feature is new as well.]

This topic explains how to configure System Guard Secure Launch and System Management Mode (SMM) protection to improve the startup security of Windows 10 devices. The information below is presented from a client perspective.[…]

https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-system-guard/system-guard-secure-launch-and-smm-protection