AD Security 101: Domain Controller Security

User rights assigned via GPOs—debug programs, back up files, take ownership, and more—become risky when misassigned. Explains how to review and lock down dangerous user rights in Active Directory.

A domain controller should do one thing: control the domain. Why ADDS belongs on a DC and which roles, tools, and apps to keep off it to shrink the attack surface.

Nearly half of Microsoft IR engagements found unsecure AD configurations; Mandiant says 9 in 10 attacks exploit AD. Covers recon via PowerView and BloodHound, key techniques, and hardening priorities.

GPO logon scripts automate logon tasks, but sprawling, poorly maintained GPO structures invite abuse. Covers how scripts work (scripts.ini) and how to secure them.

A Clang hardening cheat sheet: fortify source, strip/debug flags, ASLR/PIE and related compile- and link-time protections, filling a gap since most hardening guides focus on GCC.

Semperis argues AI-driven attacks are outpacing identity teams as machine identities outnumber human ones 10:1, and urges building organization-wide cyber resilience around hybrid identity protection before the next crisis.