Features, pricing, ratings, and pros & cons — compared head-to-head.
Assetnote ASM is a commercial external attack surface management tool by Assetnote. ZeroFox is a commercial digital risk protection tool by ZeroFox. Compare features, ratings, integrations, and community reviews side by side to find the best external attack surface management fit for your security stack.
Based on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Mid-market and enterprise security teams managing sprawling external infrastructure will get the most from Assetnote ASM because its hourly asset discovery actually catches exposures before your business units spin up new services, not weeks after. The platform covers ID.AM and DE.CM across NIST CSF 2.0, meaning you're building a real asset inventory while monitoring it continuously, and the exploit-based verification eliminates the noise that buries actionable findings in traditional scanners. Skip this if your organization lacks the headcount to operationalize a workflow-driven program; Assetnote's strength is enabling lean teams to prioritize, not giving you a dashboard to ignore.
Mid-market and enterprise security teams managing brand, executive, and data exposure across open and dark web channels should pick ZeroFox for its automated takedown operations and 24/7 managed SOC that actually closes the response gap most external threat tools create. The platform covers ID.AM through RS.AN in NIST CSF 2.0, meaning it moves past detection into investigation and remediation; the managed takedown service across multiple platforms is the concrete differentiator here. Skip this if your organization needs deep integration with existing SOAR workflows or prefers full self-service over managed services; ZeroFox's value comes from outsourcing triage and enforcement, not from becoming another data source in your ticketing system.
External attack surface management platform with continuous asset discovery
External threat intelligence platform for surface, deep, and dark web monitoring
Access NIST CSF 2.0 data from thousands of security products via MCP to assess your stack coverage.
Access via MCPNo reviews yet
No reviews yet
Explore more tools in this category or create a security stack with your selections.
Common questions about comparing Assetnote ASM vs ZeroFox for your external attack surface management needs.
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..
ZeroFox: External threat intelligence platform for surface, deep, and dark web monitoring. built by ZeroFox. Core capabilities include External attack surface management with automated asset discovery, Brand and domain protection monitoring, Executive and identity protection..
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. ZeroFox differentiates with External attack surface management with automated asset discovery, Brand and domain protection monitoring, Executive and identity protection.
Assetnote ASM is developed by Assetnote founded in 2018-01-01T00:00:00.000Z. ZeroFox is developed by ZeroFox. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.
Assetnote ASM and ZeroFox serve similar External Attack Surface Management use cases. Review the feature comparison above to determine which fits your requirements.
Get strategic cybersecurity insights in your inbox