Beyond virtualization, Microsoft introduced and refined several low-level kernel security mitigations specifically hardened for the 1809 lifecycle. Arbitrary Code Guard (ACG)
Within this isolated VBS environment, the kernel runs Hypervisor-Protected Code Integrity (HVCI). HVCI ensures that all kernel-mode drivers and binaries are verified before they are allowed to run. By moving this verification out of the standard kernel space and into a secure virtualized container, the 1809 kernel prevented sophisticated malware from modifying kernel memory or injecting malicious drivers. Hardened Kernel Features in 1809 kernel os windows 10 1809 exclusive
The 1809 kernel strictly enforced Arbitrary Code Guard. This feature prevents dynamic code generation and modification within a process. By ensuring that memory cannot be both writable and executable at the same time, the kernel effectively shut down common exploit vectors like buffer overflows and heap spraying. Control Flow Guard (CFG) By moving this verification out of the standard