Open-source security tools built by Hadrian

Free and open-source tools built by Hadrian's hackers and researchers to help security teams understand exposure, find hidden assets, review code, and perform reconnaissance.
View Hadrian on GitHub
  • SubWiz

    Predictive subdomain discovery

    Explore SubWiz →

    SubWiz is a lightweight machine learning model trained on millions of subdomains. Give it known subdomains and it predicts likely additions based on the naming patterns it finds, helping uncover assets that aren't present in passive sources.

  • OpenHack

    Hacker-tuned AI code review

    Explore OpenHack →

    OpenHack is an open-source workflow for AI-powered white-box security review. It works with coding agents including Claude Code, Codex, and Cursor to systematically investigate source code for security vulnerabilities.

  • Exposure Clock

    Vulnerability & exploit intelligence

    Set your Exposure Clock →

    The Exposure Clock shows how many exposures have been disclosed since any point in time, how many may be remotely exploitable, and how many have been added to CISA's Known Exploited Vulnerabilities catalogue.

  • SanicDNS

    Ultra fast DNS reconnaissance

    Explore SanicDNS →

    SanicDNS is an open-source DNS resolver built for high-volume reconnaissance. With the right infrastructure, it can resolve millions of domain names per second, making large-scale DNS enumeration and subdomain discovery considerably faster.

Built for security research. Shared with the community.

These tools come from the same offensive security research and engineering that powers Hadrian. We make them available so security researchers and defenders can use them, test them and build on them.
Hadrian platform dashboard showing discovered assets, domains, IPs, certificates, organisational security level, and unresolved risks

See Hadrian in action

Discover how Hadrian helps security teams find and validate vulnerabilities continuously and autonomously.