Eighteen years inside enterprise directories.
Multi-forest environments, large-scale migrations, Tier 0 hardening. What you just watched is the work itself.
Every access, every workload, every service rests on the same foundation. Here is how it falls — and how it is rebuilt, without gambling on production.
Workstations, servers, applications, service accounts: all of it rests on the same foundation. While it holds, everything holds.
Unconstrained Kerberos delegation, forgotten privileged accounts, a krbtgt password never rotated, MachineAccountQuota still at 10. Nothing exotic. This is what nine directories out of ten look like.
An SPN on a privileged account, a password cracked offline, a ticket replayed. No zero-day, no rare tooling. Just a sequence nobody had mapped.
Tier 0 isolated, Tier 1 segmented, Tier 2 contained. Every privilege returns to its layer, and no path crosses between them. Aligned with Microsoft and CIS guidance.
Read-only audit first. Then staged remediation: mandatory simulation, a backup of the original state, and a rollback ready before anything is changed.
Multi-forest environments, large-scale migrations, Tier 0 hardening. What you just watched is the work itself.