censys-subdomain-finder vs Threat Surface - Attack Surface Management: Side-by-Side Comparison (2026)

censys-subdomain-finder: A tool for performing subdomain enumeration using Censys API..

Threat Surface - Attack Surface Management: EASM platform for continuous discovery and risk assessment of external assets. Core capabilities include Continuous automated asset discovery, Shadow IT and forgotten subdomain detection, Unmanaged cloud resource identification..

Both serve the External Attack Surface Management market but differ in approach, feature depth, and target audience.

censys-subdomain-finder and Threat Surface - Attack Surface Management serve similar External Attack Surface Management use cases: both are External Attack Surface Management tools, both cover Subdomain Enumeration. Key differences: censys-subdomain-finder is Free while Threat Surface - Attack Surface Management is Commercial, censys-subdomain-finder is open-source. Review the feature comparison above to determine which fits your requirements.