Microsoft Defender EASM vs SurfaceDiff: side-by-side comparison (2026)

Microsoft Defender EASM: Discovers and monitors external-facing assets and vulnerabilities, built by Microsoft.

SurfaceDiff: Continuous external attack surface monitoring that shows what changed between scans, built by SurfaceDiff.

The table above shows where their features, integrations, deployment and company size fit differ.

Microsoft Defender EASM is made by Microsoft. SurfaceDiff is made by SurfaceDiff. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. Microsoft Defender EASM and SurfaceDiff are both External Attack Surface Management products. Use the table above to see where features, deployment and company size fit differ.