ImmuniWeb® Discovery vs Outpost24 CyberFlex: Side-by-Side Comparison (2026)

ImmuniWeb® Discovery: ImmuniWeb Discovery is an attack surface management platform that continuously monitors an organization's external digital assets for security vulnerabilities, misconfigurations, and threats across domains, applications, cloud resources, and the dark web. built by ImmuniWeb. Core capabilities include Attack Surface Management, Continuous Security Monitoring, Third-Party Risk Monitoring..

Outpost24 CyberFlex: EASM platform combined with PTaaS for web app discovery and testing. built by Outpost24. Core capabilities include Discovery of known and unknown application attack surfaces, CREST-certified human-led penetration testing, Shadow IT and Dark Web exposure detection..

Both serve the External Attack Surface Management market but differ in approach, feature depth, and target audience.

ImmuniWeb® Discovery differentiates with Attack Surface Management, Continuous Security Monitoring, Third-Party Risk Monitoring. Outpost24 CyberFlex differentiates with Discovery of known and unknown application attack surfaces, CREST-certified human-led penetration testing, Shadow IT and Dark Web exposure detection.

ImmuniWeb® Discovery is developed by ImmuniWeb. Outpost24 CyberFlex is developed by Outpost24. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

ImmuniWeb® Discovery and Outpost24 CyberFlex serve similar External Attack Surface Management use cases: both are External Attack Surface Management tools, both cover Dark Web Monitoring. Review the feature comparison above to determine which fits your requirements.