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Active Directory security assessment

Active Directory, Entra ID, and Okta vulnerabilities can give attackers virtually unrestricted access to your organization’s network and resources. Semperis built Purple Knight—a free AD, Entra ID, and Okta security assessment tool—to help you discover indicators of exposure (IoEs) and indicators of compromise (IoCs) in your hybrid AD environment. Download Purple Knight and dramatically reduce your AD attack surface today.

Download nowVersion: Purple Knight 4.2 Community
  • 25,000+ downloads (and counting)
  • 150+ IOEs and IOCs
  • 45% AD attack surface reduction
Forest Druid

Stop chasing AD attack paths. Focus on your Tier 0 perimeter.

Go to Forest Druid

Avoid common Active Directory attacks

  • AD and Azure AD security report card

    AD, Entra ID, and Okta security audit

  • Pre- and post-attack security indicators

    Indicators of Exposure
    and Indicators of Compromise

  • Community-driven threat models

    AD threat intelligence

  • Prioritized, actionable guidance

    Prioritized AD security
    guidance from Semperis experts

  • MITRE ATT&CK correlation


Do you know your Active Directory security vulnerabilities?

New Purple Knight users report an average initial security score of 68%—a barely passing grade. But users who apply the prioritized guidance provided with the assessment can systematically close AD security gaps, reducing the attack surface by up to 45%. Learn how these Purple Knight users hardened security posture of their AD environments.

Uncover your AD, Entra ID, and Okta security vulnerabilities in minutes.

Unleash Purple Knight

Spot Active Directory vulnerabilities before attackers do

With an Active Directory security audit, spot threats before attackers do.

Find AD, Entra ID, and Okta security gaps with Purple Knight. Perform a comprehensive set of tests against the most common and effective attack vectors to find risky configurations and security vulnerabilities.

Prioritize Active Directory security gaps for remediation with an AD security audit

Identify and prioritize Active Directory security gaps for remediation.

Gain visibility into your hybrid AD security posture with the Purple Knight report. See your AD, Entra ID, and Okta security audit scores in five categories, plus get prescriptive guidance from identity security experts to help you prioritize remediation efforts.

Fix AD and Azure AD security vulnerabilities that attackers can exploit.

Fix AD, Entra ID, and Okta security threats that attackers can exploit.

Use Purple Knight’s prioritized, expert guidance to systematically address AD, Entra ID, and Okta misconfigurations and unpatched vulnerabilities—for example, admin accounts with old passwords and enabled admin accounts that are inactive.

Validate hybrid AD security posture over time

Validate hybrid AD security posture over time.

Run Purple Knight’s AD security audit periodically to guard against misconfigurations that can accumulate over time and degrade hybrid AD environment security if left unchecked.

100+ security indicators
100+ security indicators

security indicators

Purple Knight scans for known vulnerabilities and emerging threats discovered by our team of expert threat researchers

Indicators of Exposure (IOEs) from AD security assessment
Indicators of exposure (IOEs)

Scan your hybrid Active Directory environment to uncover risky configurations that attackers can easily exploit.

Indicators of Compromise (IOCs)
Indicators of compromise (IOCs)

Shine a light on evidence of compromise, which can signal an in-progress cyberattack in your Active Directory environment.

See Purple Knight in action.

Watch as Purple Knight scans an Active Directory environment in minutes, detecting vulnerabilities that attackers can exploit at any moment. Get ready to unleash Purple Knight.

What do Purple Knight users say?


Purple Knight is a powerful tool with a nicely packaged set of scripts that does a fantastic job of showing you some of the hidden aspects of your AD that are just waiting to be discovered by the wrong person. Patrick Emerick Senior Systems Engineer | Bethel School District
I recommend Purple Knight for its ease of use—it’s GUI-based, it gives you a quick report card, and gives you a good, easy checklist of things to start working on. Jim Shakespear Director of IT Security | Southern Utah University
Purple Knight is the first utility I’ve used that digs this deep into Active Directory. It works so well, I didn’t need to find anything else. Micah Clark IT Manager | Central Utah Emergency Communications
The Purple Knight report helped us take action on items right away, such as shutting down or disabling Active Directory accounts that shouldn’t have been enabled. And then it helped us develop a long-term maintenance plan. CISO Canadian manufacturing company


Learn how malicious actors are targeting Active Directory. Explore how Purple Knight is helping organizations close security gaps in their AD environments.

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