# Cobalt Attack Surface Monitoring vs SurfaceDiff: side-by-side comparison (2026)

[Cobalt Attack Surface Monitoring](https://cybersectools.com/tools/cobalt-attack-surface-monitoring) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [Cobalt](https://cybersectools.com/companies/cobalt). [SurfaceDiff](https://cybersectools.com/tools/surfacediff) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [SurfaceDiff](https://cybersectools.com/companies/surfacediff). Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Attack Surface Management Solutions for Business](https://cybersectools.com/shortlists/best-attack-surface-solutions) picks Palo Alto Networks Cortex Xpanse, Microsoft Defender EASM, Google Mandiant Attack Surface Management and 4 more.

## Side-by-side comparison

| | Cobalt Attack Surface Monitoring | SurfaceDiff |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | External Attack Surface Management | External Attack Surface Management |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | Cobalt | SurfaceDiff |
| Headquarters | – | – |

### Use cases and capabilities

| | Cobalt Attack Surface Monitoring | SurfaceDiff |
|---|---|---|
| Reconnaissance | Yes | Yes |
| DNS Security | – | Yes |
| Port Scanning | – | Yes |
| TLS | – | Yes |
| Subdomain Enumeration | – | Yes |
| Network Scanning | – | Yes |
| Security Scanning | – | Yes |
| Alerting | – | Yes |
| Visibility | – | Yes |
| Web Security | – | Yes |

### Core features

**Cobalt Attack Surface Monitoring**

7 features listed. Sign in on the page to see them.

**SurfaceDiff**

9 features listed. Sign in on the page to see them.

### Integrations

**Cobalt Attack Surface Monitoring**

15 integrations listed. Sign in on the page to see them.

**SurfaceDiff**

No integrations listed.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [SurfaceDiff](https://cybersectools.com/tools/surfacediff) fits if you are a startup.

## Cobalt Attack Surface Monitoring vs SurfaceDiff FAQ

Common questions when comparing Cobalt Attack Surface Monitoring vs SurfaceDiff for external attack surface management.

### What is the difference between Cobalt Attack Surface Monitoring and SurfaceDiff?

**Cobalt Attack Surface Monitoring**: Continuous external asset discovery and monitoring with daily domain scans, built by Cobalt.

**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.

### Who makes Cobalt Attack Surface Monitoring and SurfaceDiff?

**Cobalt Attack Surface Monitoring** is made by Cobalt. **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.

### Is Cobalt Attack Surface Monitoring a good alternative to SurfaceDiff?

Often, yes. Cobalt Attack Surface Monitoring and SurfaceDiff are both External Attack Surface Management products, and both cover Reconnaissance. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Cobalt Attack Surface Monitoring vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/cobalt-attack-surface-monitoring-vs-ddactic-attack-surface-discovery)
- [Cobalt Attack Surface Monitoring vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-cobalt-attack-surface-monitoring)
- [Cobalt Attack Surface Monitoring vs Trickest ASM - Attack Surface Management](https://cybersectools.com/compare/cobalt-attack-surface-monitoring-vs-trickest-asm-attack-surface-management)
- [SurfaceDiff vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-surfacediff)
- [SurfaceDiff vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-surfacediff)
- [SurfaceDiff vs Trickest ASM - Attack Surface Management](https://cybersectools.com/compare/surfacediff-vs-trickest-asm-attack-surface-management)

## Alternatives to each

- [See all Cobalt Attack Surface Monitoring alternatives](https://cybersectools.com/alternatives/cobalt-attack-surface-monitoring)
- [See all SurfaceDiff alternatives](https://cybersectools.com/alternatives/surfacediff)

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Source: https://cybersectools.com/compare/cobalt-attack-surface-monitoring-vs-surfacediff

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/cobalt-attack-surface-monitoring.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Cobalt Attack Surface Monitoring and SurfaceDiff: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md