Assetnote ASM vs Attack Surface Scan: Side-by-Side Comparison (2026)

Assetnote ASM: External attack surface management platform with continuous asset discovery. built by Assetnote. Core capabilities include Hourly automated asset discovery and scanning, Asset enrichment and contextualization, Exploit-based vulnerability verification..

Attack Surface Scan: Agentless external attack surface monitoring with continuous change detection. built by Attack Surface Scan. Core capabilities include Agentless external attack surface scanning with no installation required, Continuous scheduled re-scanning with change detection and diff tracking, HTTP security header analysis (HSTS, CSP, CORS, cookie flags)..

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

Assetnote ASM differentiates with Hourly automated asset discovery and scanning, Asset enrichment and contextualization, Exploit-based vulnerability verification. Attack Surface Scan differentiates with Agentless external attack surface scanning with no installation required, Continuous scheduled re-scanning with change detection and diff tracking, HTTP security header analysis (HSTS, CSP, CORS, cookie flags).

Assetnote ASM is developed by Assetnote founded in 2018-01-01T00:00:00.000Z. Attack Surface Scan is developed by Attack Surface Scan. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Assetnote ASM and Attack Surface Scan serve similar External Attack Surface Management use cases: both are External Attack Surface Management tools, both cover Security Scanning. Review the feature comparison above to determine which fits your requirements.