Assetnote ASM vs Siemba EASM: 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..

Siemba EASM: AI-driven EASM platform for discovering and monitoring external-facing assets. built by Siemba. Core capabilities include External asset discovery without credentials, Real-time monitoring of domains, subdomains, and IPs, TLS configuration and certificate vulnerability detection..

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. Siemba EASM differentiates with External asset discovery without credentials, Real-time monitoring of domains, subdomains, and IPs, TLS configuration and certificate vulnerability detection.

Assetnote ASM is developed by Assetnote founded in 2018-01-01T00:00:00.000Z. Siemba EASM is developed by Siemba. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Assetnote ASM and Siemba EASM serve similar External Attack Surface Management use cases: both are External Attack Surface Management tools. Review the feature comparison above to determine which fits your requirements.