Intruder Discover Attack Surface vs tko-subs: side-by-side comparison (2026)

Intruder Discover Attack Surface: Attack surface management platform for discovering and securing exposed assets. Built by Intruder.

tko-subs: A tool for detecting and taking over subdomains with dead DNS records.

The table above shows where their features, integrations, deployment and company size fit differ.

Intruder Discover Attack Surface is made by Intruder. tko-subs is open-source with 766 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. Intruder Discover Attack Surface and tko-subs are both External Attack Surface Management products, and both cover Subdomain Enumeration. Key differences: Intruder Discover Attack Surface is Commercial while tko-subs is Free, tko-subs is open-source. Use the table above to see where features, deployment and company size fit differ.