DDactic Attack Surface Discovery vs Shodan: side-by-side comparison (2026)

DDactic Attack Surface Discovery: Scans domains to discover attack surface, vulnerabilities, and generate hardening. Built by DDactic.

Shodan: A search engine for the Internet of Things (IoT) that discovers and monitors devices connected to the internet.

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

Often, yes. DDactic Attack Surface Discovery and Shodan are both External Attack Surface Management products. Key differences: DDactic Attack Surface Discovery is Commercial while Shodan is Free. Use the table above to see where features, deployment and company size fit differ.