Attack Surface Scan vs Halo Security Attack Surface Discovery: side-by-side comparison (2026)

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

Halo Security Attack Surface Discovery: Discovers and inventories internet-facing assets including subdomains, IPs, and apps. Built by Halo Security.

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

Attack Surface Scan is made by Attack Surface Scan. Halo Security Attack Surface Discovery is made by Halo Security. 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 Halo Security Attack Surface Discovery are both External Attack Surface Management products, and both cover Subdomain Enumeration. Use the table above to see where features, deployment and company size fit differ.