HardenAD is an open-source tool developed by Loic Veirman designed to automate the process of hardening your Active Directory (AD) environment. It streamlines the implementation of security best practices, reducing the time and complexity associated with manual configuration.

What it Does

HardenAD automates various tasks related to AD security, including:

  • Disabling Unnecessary Features: Disabling features within AD that are not actively used, reducing the attack surface.
  • Enforcing Strong Security Policies: Implementing group policy settings related to password complexity, account lockouts, and other security controls.
  • Managing User and Group Permissions: Reviewing and adjusting permissions to follow the principle of least privilege.
  • Securing Service Accounts: Hardening service accounts to reduce their privileges and potential attack vectors.
  • Automating Security Tasks: Scheduling regular tasks to maintain a secure AD environment.

Key Features

  • Automated Hardening: HardenAD automates many tedious security tasks, saving IT professionals valuable time and effort.
  • Customizable Configuration: Users can configure the level of hardening applied to their AD environment based on their specific needs.
  • Pre-built Security Tasks: HardenAD offers a library of pre-defined security tasks based on security best practices.
  • GUI and Script Options: HardenAD provides a user-friendly GUI for configuration and also offers script-based operation for automation.
  • Open-Source and Free: Anyone can access and use HardenAD without any licensing fees.

URL: https://github.com/LoicVeirman/HardenAD

Free or Paid:

HardenAD is completely free and open-source software. You can download it from the GitHub repository and use it without any limitations.

Important Considerations

  • Testing and Validation: It’s crucial to thoroughly test HardenAD’s impact in a non-production environment before deploying it to your live AD infrastructure. This ensures compatibility and avoids unintended consequences.
  • Technical Expertise: While HardenAD automates tasks, some understanding of AD security best practices is recommended for configuring and using the tool effectively.
  • Complementary Tool: HardenAD is a valuable tool for hardening AD, but it should be used in conjunction with other security measures for a comprehensive defense strategy.


HardenAD significantly simplifies the process of hardening your Active Directory environment. It automates tedious tasks, promotes security best practices, and helps reduce the attack surface. However, proper testing and understanding of AD security are essential before deploying the tool in production.tunesharemore_vert

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