Assetnote ASM vs csprecon: 2026 Comparison
Assetnote ASM is a commercial external attack surface management tool by Assetnote. csprecon is a free external attack surface management tool. Compare features, ratings, integrations, and community reviews side by side to find the best external attack surface management fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, 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.
Security teams hunting for undiscovered subdomains and forgotten properties will find csprecon's CSP header parsing approach uniquely effective; it surfaces domains that traditional subdomain enumeration misses because they're explicitly referenced in live security policies. The 482 GitHub stars and zero-friction free tier mean you can validate coverage gaps across your attack surface in an afternoon without budget approval. Skip this if you need continuous monitoring or want remediation workflows integrated; csprecon is a discovery tool, not a scanning or tracking platform.
