BloodHound is a free and open-source offensive security tool developed by @byt3bl3eder. It specializes in visualizing and analyzing attack paths within Active Directory (AD) and Azure Active Directory (AAD) environments. This allows security professionals to identify potential security weaknesses and understand how an attacker might exploit them to gain access to sensitive data or resources.

What it Does

BloodHound collects data from your AD or AAD environment and builds a visual graph that represents the relationships between users, groups, computers, and permissions. By analyzing this graph, security professionals can gain insights into:

  • Privileged Escalation Paths: How a low-privileged user might gain access to administrative accounts.
  • Lateral Movement: How an attacker can move across your network once they have compromised an initial system.
  • Misconfigured Access Control: Weaknesses in permissions that grant unauthorized access to sensitive resources.
  • Domain Trust Relationships: How trust relationships between domains can be exploited for lateral movement.

BloodHound does not exploit any vulnerabilities or directly interact with your AD/AAD environment. It passively gathers data to build the attack path visualization.

Key Features

  • Visualization: BloodHound presents attack paths in a clear and intuitive graph format, making it easy to understand complex relationships.
  • Customization: Users can customize the graph by filtering specific objects or relationships to focus on areas of interest.
  • Data Import: BloodHound can import data from various sources, including Active Directory queries and Azure Active Directory exports.
  • Extensibility: The tool supports plugins for extending functionality and adding integrations with other security tools.
  • Free and Open-Source: Anyone can download and use BloodHound without any licensing fees.

URL: https://github.com/BloodHoundAD/BloodHound/blob/master/docs/index.rst

Free or Paid:

BloodHound is completely free and open-source software. You can download it from the official website and use it without any limitations.

Important Considerations

  • Ethical Usage: BloodHound is a powerful tool that can be used for both offensive and defensive security purposes. It’s crucial to use BloodHound ethically and only on authorized systems.
  • Security Concerns: Due to its capability of revealing attack paths, BloodHound can be misused by malicious actors. Implementing strong access controls and monitoring its use within your environment is essential.
  • Complementary Tool: BloodHound should be used in conjunction with other security tools and best practices for a comprehensive security assessment.


BloodHound is a valuable asset for security professionals who want to proactively identify and mitigate potential attack paths within their AD and AAD environments. However, it’s critical to use it responsibly and understand its limitations.

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