SurfaceDiff vs TrustFour T4 Control Plane: side-by-side comparison (2026)
SurfaceDiff is a commercial external attack surface management solution by SurfaceDiff. TrustFour T4 Control Plane is a commercial certificate lifecycle management solution by TrustFour. Features, integrations, deployment and the company behind each one, side by side.
Continuous external attack surface monitoring that shows what changed between scans.
TLS compliance monitoring and management platform aligned to NIST 800-52R2.
Side-by-side comparison
Feature
SurfaceDiff
TrustFour T4 Control Plane
Pricing model
Commercial
Commercial
Category
External Attack Surface Management
Certificate Lifecycle Management
Deployment and fit
Deployment type
Cloud
Cloud
Company size fit
Startup, SMB, Mid-Market, Enterprise
Mid-Market, Enterprise
Company
Company
SurfaceDiff
TrustFour
Use cases and capabilities
DNS Security
Yes
No
Port Scanning
Yes
No
TLS
Yes
Yes
Subdomain Enumeration
Yes
No
Network Scanning
Yes
No
Security Scanning
Yes
No
Alerting
Yes
Yes
Reconnaissance
Yes
No
Visibility
Yes
No
Web Security
Yes
No
NIST
No
Yes
SSL
No
Yes
Encryption
No
Yes
Configuration Management
No
Yes
Anomaly Detection
No
Yes
Key Management
No
Yes
Crypto
No
Yes
Network Monitoring
No
Yes
Core features
9 features listed
10 features listed
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