Published on February 26, 2025
Five Best Practices for Securing Active Directory Service Accounts
Severity
Medium
As Windows Active Directory (AD) service accounts have high-level privileges and have access to important systems, they easily become the targets of threat actors. Threat actors will be able to gain access to other privileged systems if the service account were to be compromised. This is the very reason why Windows administrators must apply robust security measures in place to safeguard AD environments from potential breaches.
Below are 5 best practices to secure your AD service accounts.
- Follow the Principle of Least Privileged
As AD service accounts are created solely to perform specific tasks, users should only possess the required permission that’s relevant to those tasks. Therefore, windows administrators are advised to set up only a minimum set of privileges required when configuring service accounts.
- Use multi-factor authentication (MFA) wherever possible
Although service accounts are not meant for interactive logins, incorporating MFA enhances the security of your AD environment.
- Remove service accounts not in use
Active Directory service accounts should be managed as part of a dynamic lifecycle management program. Any service accounts that are unused or no longer needed should be quickly disabled or flagged for review.
- Monitor service account activity
As AD service accounts are threat actors’ main focus, it’s recommended to monitor the activities related to service accounts. Suspicious activities and anomalies should be investigated thoroughly to ensure it’s not compromised.
- Enforce robust password policies across the organization
Ensure service accounts have complex, lengthy passwords to prevent brute-force attacks. Not only service accounts, but all user accounts are also advised to have complex password policy to enhance the overall security of your AD Domain Services.