The server underneath everything, checked the way an attacker who's already in would look at it.
A "host" is any server your workloads run on: a VM, a bare-metal box, an on-prem machine. Even with a hardened application on top, an outdated OS package, an unnecessary open service, or an over-permissive user account on the host itself gives an attacker a foothold and a path to move sideways into everything else it touches. This check looks at the host the way an attacker does once they've landed on it.
Free to try. See real, CVSS-scored results in minutes.