Assetnote ASM vs SurfaceDiff: side-by-side comparison (2026)
Assetnote ASM is a commercial external attack surface management solution by Assetnote. SurfaceDiff is a commercial external attack surface management solution by SurfaceDiff. Features, integrations, deployment and the company behind each one, side by side.
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External attack surface management platform with continuous asset discovery
Continuous external attack surface monitoring that shows what changed between scans.
Side-by-side comparison
Feature
Assetnote ASM
SurfaceDiff
Pricing model
Commercial
Commercial
Category
External Attack Surface Management
External Attack Surface Management
Verified
No
No
Deployment and fit
Deployment type
Cloud
Cloud
Company size fit
Mid-Market, Enterprise
Startup, SMB, Mid-Market, Enterprise
Company
Company
Assetnote
SurfaceDiff
Use cases and capabilities
Security Scanning
Yes
Yes
DNS Security
No
Yes
Port Scanning
No
Yes
TLS
No
Yes
Subdomain Enumeration
No
Yes
Network Scanning
No
Yes
Alerting
No
Yes
Reconnaissance
No
Yes
Visibility
No
Yes
Web Security
No
Yes
Core features
10 features listed
9 features listed
Integrations
2 integrations listed
No integrations listed
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