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

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

SubOver: A powerful tool for finding and exploiting subdomain takeover vulnerabilities.

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

Attack Surface Scan is made by Attack Surface Scan. SubOver is open-source with 957 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 SubOver are both External Attack Surface Management products, and both cover Subdomain Enumeration. Key differences: Attack Surface Scan is Commercial while SubOver is Free, SubOver is open-source. Use the table above to see where features, deployment and company size fit differ.