Security Architecture for Hyper-V Clusters
Threat Models, VBS, and Defense in Depth
A Hyper-V host is the most valuable target on your network.
Compromise a workstation, you get one user’s data. Compromise an application server, you get one application’s data. Compromise a Hyper-V host, you get every virtual machine running on it , their memory, their disks, their network traffic. Compromise the cluster, and you get them all.
The hypervisor is the trust boundary. Everything above it , every VM, every guest OS, every application , depends on the integrity of what’s below. Security architecture for Hyper-V isn’t about checking boxes on a hardening guide. It’s about understanding what you’re protecting, what you’re protecting it from, and which layers of defense map to which threats.