ASM Platform Comparisons

Independent head-to-head comparisons of attack surface management platforms. Each comparison covers the architectural difference between two platforms, where each wins, and a direct verdict on which belongs in which environment. No vendor affiliation.

• Vuln ecosystem — head-to-head

  Tenable vs. Qualys

  Two Gartner MQ Leaders with different architectural commitments to CTEM. The comparison that matters for organizations already running enterprise vulnerability management and evaluating which platform to extend into external discovery.
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• Pure-play vs. platform consolidator

  Censys vs. Cortex Xpanse

  Internet-scale discovery data platform vs. operationalized EASM within a security ecosystem. Covers the question buyers rarely ask explicitly: do you need a data platform or a managed workflow?
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• Pure-play specialists — head-to-head

  IONIX vs. CyCognito

  Organizational entity mapping vs. active exposure validation. Both use seedless discovery. The difference is architectural — which one fits depends on whether your hard problem is knowing what you own or knowing what is actually exposed.
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• Risk rating vs. operational EASM

  Bitsight vs. Tenable

  The comparison that should not exist as a direct evaluation — but frequently does. Covers why these platforms answer different questions, who the right buyer is for each, and what happens when you buy the wrong one for the wrong audience.
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• Platform consolidators — head-to-head

  CrowdStrike Falcon Surface vs. Microsoft Defender EASM

  Two ecosystem bets, not two EASM products. The comparison that matters for organizations already committed to one of these security stacks and asking whether the native EASM module closes the external visibility gap.
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