FortifyData Attack Surface Management is a commercial external attack surface management solution by FortifyData. Microsoft Defender EASM is a commercial external attack surface management solution by Microsoft. Features, integrations, deployment and the company behind each one, side by side.
What our shortlists say about the one we picked.
Best for: Microsoft shops adding external asset discovery
It belongs here if you already pay for Microsoft security, because discovered assets can move into Defender for Cloud and Copilot in Azure turns plain questions into inventory searches. It fits companies from small to enterprise. Its features center on discovery and flagging, so ask whether you also need active testing to prove which exposures are real.
From Best Attack Surface Management Solutions for Business, Fall 2026
Reviewed by Nika (Nikoloz) Kokhreidze.
ASM platform for discovering, monitoring, and prioritizing external/internal assets
Discovers and monitors external-facing assets and vulnerabilities
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Common questions when comparing FortifyData Attack Surface Management vs Microsoft Defender EASM for external attack surface management.
FortifyData Attack Surface Management: ASM platform for discovering, monitoring, and prioritizing external/internal assets. Built by FortifyData.
Microsoft Defender EASM: Discovers and monitors external-facing assets and vulnerabilities. Built by Microsoft.
The table above shows where their features, integrations, deployment and company size fit differ.
FortifyData Attack Surface Management is made by FortifyData. Microsoft Defender EASM is made by Microsoft. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. FortifyData Attack Surface Management and Microsoft Defender EASM are both External Attack Surface Management products. Use the table above to see where features, deployment and company size fit differ.
Need the answer fast? Best Attack Surface Management Solutions for Business picks Palo Alto Networks Cortex Xpanse, Microsoft Defender EASM, Mandiant Attack Surface Management and 4 more.See the shortlist