Attack Surface Scan vs Findomain: side-by-side comparison (2026)

Attack Surface Scan: Agentless external attack surface monitoring with continuous change detection. Built by Attack Surface Scan.

Findomain: A domain reconnaissance tool that automates subdomain discovery, port scanning, and monitoring with support for multiple data sources and notification integrations.

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

Attack Surface Scan is made by Attack Surface Scan. Findomain is open-source with 3,561 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

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