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Active Directory Security

Active Directory Security

Active Directory Security

Wyatt Mahony

THE DIRECT ANSWER

Active Directory is the keys to the kingdom. An attacker who compromises one admin account can create new accounts, elevate privileges, and maintain persistent access. Here's what you need to monitor—and why most organizations don't.

Active Directory is the keys to the kingdom. An attacker who compromises one admin account can create new accounts, elevate privileges, and maintain persistent access. Here's what you need to monitor—and why most organizations don't.

Why AD Is the #1 Target

Attackers who gain domain admin access can:

•       Create new admin accounts

•       Reset any password

•       Access any system

•       Deploy ransomware domain-wide in minutes

•       Maintain hidden backdoors for months

 

Warning Signs to Monitor

•       New admin accounts: Any new account added to admin groups

•       Privilege changes at odd hours: Admin activities at 2 AM are suspicious

•       Disabled accounts re-enabled: Often a sign of persistence

•       Service account authentication anomalies: Service accounts should be predictable

•       Password spraying patterns: Many accounts with failed logins in short time

 

Essential AD Security Controls

1.    Tiered Admin Model: Separate accounts for workstation, server, and domain admin

2.    Privileged Access Workstations: Admin tasks only from secured systems

3.    LAPS: Unique local admin passwords on every machine

4.    Credential Guard: Protect credentials from theft

5.    Event Log Forwarding: Centralize logs before attackers can delete them

 

Questions for Your IT Provider

6.    Do you monitor AD for suspicious changes 24/7?

7.    How quickly would you detect a new admin account?

8.    Do you use a tiered admin model?

9.    When was the last AD security assessment?

Sources and evidence

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