What is an Active Directory Security Assessment?

An Active Directory Security Assessment is a focused review of the identity system that most attackers target first. The goal is to identify misconfigurations, privilege escalation paths, delegated access, trust weaknesses, and hygiene gaps that could allow an attacker to move from limited access to privileged control of the domain.

Rather than looking at Active Directory as a collection of isolated settings, the assessment evaluates how permissions, policies, accounts, groups, computers, certificate services, file shares, and administrative relationships work together. That relationship-driven view is what helps uncover real attack paths.

Why Identity-First Testing Matters

Most domain takeovers do not come from a single critical vulnerability. Instead, attackers chain together smaller identity issues: misconfigured permissions, weak delegation settings, trust relationships, and hygiene gaps that compound over time.

Active Directory sits at the center of authentication, authorization, workstation administration, server administration, file access, and many business-critical systems. If AD is compromised, the attacker may be able to access sensitive data, deploy malware, disable defenses, create persistence, and control systems across the environment.

An AD security assessment is identity-first. It asks how a real attacker could abuse permissions, trust relationships, delegation, policy, authentication settings, and misconfiguration to gain control. That makes it especially useful for understanding domain compromise risk and prioritizing fixes that reduce the most meaningful exposure.

What Gets Tested

Users, groups, and computers: Membership, permissions, and relationships
Organizational Unit (OU) structure: How access flows through your hierarchy
Access Control Lists (ACLs): Object-level access, delegated rights, and abuse paths
Group Policy Objects (GPOs): Security settings, misconfigurations, and inheritance
Trust relationships: Forest trusts, external trusts, and trust abuse paths
Delegation: Admin delegation, constrained delegation, and resource-based constraints
Kerberos and authentication: Ticket settings, encryption types, and authentication protocols
Active Directory Certificate Services (AD CS): If present, certificate template misconfigurations
SMB and LDAP signing: Relay attack exposure and authentication hardening gaps
File shares: Excessive access, exposed credentials, scripts, and sensitive data such as PII or PHI
Tier 0 exposure: Domain controllers, certificate authorities, privileged accounts, and systems that can control identity
Credential security: Roastable accounts, exposed secrets, stale service accounts, and password hygiene indicators
Hygiene issues: Stale accounts, excessive privilege, sensitive built-in groups, and risky services on domain controllers

The goal is to understand how multiple weaknesses can be combined to achieve domain compromise, while also identifying standalone issues that create identity-related exposure.

Common Findings

Common Active Directory assessment findings include:

Excessive Domain Admin, Enterprise Admin, or privileged group membership
Over-permissive ACLs that allow password resets, group modification, DCSync rights, or object takeover
Delegated administration paths that unintentionally grant control over privileged users or systems
AD CS templates that allow certificate-based privilege escalation
Group Policy settings that grant excessive local admin rights or weaken security controls
Weak Kerberos settings, including roastable accounts and outdated encryption support
Inconsistent SMB signing, LDAP signing, and channel binding posture
Trust relationships that expose one domain or forest to compromise from another
Stale privileged accounts, unused service accounts, and excessive standing access
File shares that expose credentials, scripts, database connection strings, PII, PHI, or sensitive business data
Critical account hygiene issues, such as KRBTGT not being rotated in years

Not every finding is a domain compromise by itself. The important question is how findings combine. A stale account, exposed credential, broad file share permission, and delegated right over a sensitive OU can become a realistic attack chain when viewed together.

Three-Phase Approach

Testing is typically performed from multiple permission levels for maximum coverage:

Unauthenticated: Identify internal exposure and foothold opportunities without credentials
Standard domain user: Evaluate what a low-privileged user can access, abuse, or escalate through
Domain Admin: Validate high-impact configuration and hygiene gaps with full visibility

The Domain Admin phase is not about proving that a Domain Admin can take over the domain. It is about seeing the full configuration, identifying issues that lower-privileged views may miss, and giving the organization a more complete remediation plan.

Key Deliverables

Prioritized findings with evidence and impact
Clear remediation steps for each issue
Attack chain analysis showing how weaknesses combine
Practical roadmap (short-term, medium-term, long-term initiatives)
Live debrief to walk through attack chains
Optional post-remediation validation

Good reporting should help both technical and executive audiences. Technical teams need enough detail to reproduce and fix the issue. Leadership needs to understand business impact, domain compromise risk, and which remediation work matters most.

Production Safety

An AD assessment should be designed to be safe for production. Collection is usually read-only where possible, and validation should be coordinated carefully with AD and infrastructure owners. The goal is to identify risk without causing outages, authentication disruption, or unexpected configuration changes.

If a scenario requires higher-risk validation, it should be discussed before execution and either excluded or scheduled for an approved maintenance window.

How Long Does an AD Assessment Take?

Most environments require 1 to 2 weeks of testing plus reporting and a live debrief. Larger environments, multi-domain forests, complex trust relationships, large object counts, AD CS deployments, or deeper coverage of tiering and delegated administration can take longer.

Timeline depends on the number of domains and forests, the size of the environment, available access, AD CS presence, file share review depth, and how much validation is requested.

Best Practice Alignment

The most useful AD assessments are threat-driven first. The priority is reducing real domain takeover risk, not producing a generic checklist. Recommendations can still be mapped to Microsoft security baselines, CIS guidance, NIST controls, or MITRE ATT&CK techniques where that helps with governance, reporting, or remediation planning.

When to Choose an AD Assessment

Choose an AD security assessment when:

You need to understand identity takeover risk specifically
You want to break attack chains before they become incidents
You need a roadmap for AD hardening and hygiene improvements
You have AD CS, multiple domains, forest trusts, complex delegation, or a large privileged access model
You need a clearer view of Tier 0 exposure and domain compromise scenarios

Need a Deeper Review of Active Directory?

Looking for a deeper review of your Active Directory environment? Learn more about our Active Directory Security Assessment service.