DDactic Attack Surface Discovery vs Knock: Side-by-Side Comparison (2026)

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

Knock: A subdomain scan tool that helps you find subdomains of a given domain..

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

DDactic Attack Surface Discovery is developed by DDactic founded in 2026-01-01T00:00:00.000Z. Knock is open-source with 4,054 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

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