Features, pricing, ratings, and pros and cons, compared head to head.
Assetnote Attack Surface Management Tool is a commercial external attack surface management tool by Searchlight Cyber. tko-subs 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. Independent and vendor-neutral: we never sell rankings.
Based on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
Assetnote Attack Surface Management Tool
Mid-market and enterprise security teams drowning in undiscovered external assets will find Assetnote Attack Surface Management Tool's hourly scanning and automated enrichment actually catches the forgotten domains and shadow IT that quarterly pen tests miss. The platform covers NIST ID.AM and ID.RA rigorously, with zero-day research and PoC exploits included rather than sold separately. Skip this if your org needs continuous monitoring of internal infrastructure or if you expect one tool to handle both external discovery and remediation workflow; Assetnote excels at finding and classifying what's out there, not orchestrating fixes across teams.
Pentesters and bug bounty hunters looking to quickly identify subdomain takeover opportunities should reach for tko-subs; it's purpose-built for finding dead DNS records that expose attackers to domain hijacking, and the 766 GitHub stars reflect active use in offensive security communities. The tool excels at the reconnaissance phase where speed matters, automating what would otherwise be manual domain validation across hundreds of subdomains. Skip this if you need deeper DNS validation, certificate transparency correlation, or integration with broader asset discovery platforms; tko-subs does one thing and doesn't attempt the ecosystem around it.
ASM platform that scans external attack surfaces hourly for vulnerabilities
A tool for detecting and taking over subdomains with dead DNS records
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Common questions about comparing Assetnote Attack Surface Management Tool vs tko-subs for your external attack surface management needs.
Assetnote Attack Surface Management Tool: ASM platform that scans external attack surfaces hourly for vulnerabilities. built by Searchlight Cyber. Core capabilities include Hourly automated scanning of external assets, Asset and subdomain discovery from seed domains, Automated asset enrichment with version verification..
tko-subs: A tool for detecting and taking over subdomains with dead DNS records..
Both serve the External Attack Surface Management market but differ in approach, feature depth, and target audience.
Assetnote Attack Surface Management Tool is developed by Searchlight Cyber founded in 2017-01-01T00:00:00.000Z. tko-subs is open-source with 766 GitHub stars. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.
Assetnote Attack Surface Management Tool and tko-subs serve similar External Attack Surface Management use cases: both are External Attack Surface Management tools, both cover Subdomain Enumeration. Key differences: Assetnote Attack Surface Management Tool is Commercial while tko-subs is Free, tko-subs is open-source. Review the feature comparison above to determine which fits your requirements.
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