ImmuniWeb® Discovery vs LeakIX: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
ImmuniWeb® Discovery is a commercial external attack surface management tool by ImmuniWeb. LeakIX 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 attack surfaces across cloud, SaaS, and third-party integrations should prioritize ImmuniWeb® Discovery for its dark web monitoring and supplier risk visibility, capabilities most competitors either skip or bolt on as afterthoughts. The platform covers five NIST CSF 2.0 functions including asset discovery, continuous monitoring, and supply chain risk, which means it actually closes gaps in how you map external exposure rather than just flagging what you already know exists. Skip this if your organization needs deep cloud-native workload scanning or has zero tolerance for monitoring capabilities that lean detection over remediation; ImmuniWeb® Discovery is built for visibility-first teams, not for shops that demand integrated response automation.
Red teamers and penetration testers evaluating external attack surface will find LeakIX valuable because it surfaces misconfigurations and exposed services that standard vulnerability scanners miss, particularly data repositories and cloud storage left publicly readable. The free pricing means you can run continuous reconnaissance without licensing friction, and the search-engine approach catches drift faster than periodic manual audits. Skip this if your team needs authenticated scanning of internal infrastructure or remediation workflow integration; LeakIX is strictly for finding what's already exposed on the open internet.
