# ImmuniWeb® Discovery vs SurfaceDiff: side-by-side comparison (2026)

[ImmuniWeb® Discovery](https://cybersectools.com/tools/immuniweb-discovery) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [ImmuniWeb](https://cybersectools.com/companies/immuniweb). [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, Mandiant Attack Surface Management and 4 more.

## Side-by-side comparison

| | ImmuniWeb® Discovery | 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 | ImmuniWeb | SurfaceDiff |
| Headquarters | – | – |

### Use cases and capabilities

| | ImmuniWeb® Discovery | SurfaceDiff |
|---|---|---|
| Dark Web Monitoring | Yes | – |
| DNS Security | – | Yes |
| Port Scanning | – | Yes |
| TLS | – | Yes |
| Subdomain Enumeration | – | Yes |
| Network Scanning | – | Yes |
| Security Scanning | – | Yes |
| Alerting | – | Yes |
| Reconnaissance | – | Yes |
| Visibility | – | Yes |
| Web Security | – | Yes |

### Core features

**ImmuniWeb® Discovery**

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

**SurfaceDiff**

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

### Integrations

**ImmuniWeb® Discovery**

3 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.

## ImmuniWeb® Discovery vs SurfaceDiff FAQ

Common questions when comparing ImmuniWeb® Discovery vs SurfaceDiff for external attack surface management.

### What is the difference between ImmuniWeb® Discovery and SurfaceDiff?

**ImmuniWeb® Discovery**: ImmuniWeb Discovery is an attack surface management platform that continuously monitors an organization's external digital assets for security vulnerabilities, misconfigurations, and threats across domains, applications, cloud resources, and the dark web, built by ImmuniWeb.

**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 ImmuniWeb® Discovery and SurfaceDiff?

**ImmuniWeb® Discovery** is made by ImmuniWeb. **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 ImmuniWeb® Discovery a good alternative to SurfaceDiff?

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

## Related comparisons

- [ImmuniWeb® Discovery vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-immuniweb-discovery)
- [ImmuniWeb® Discovery vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-immuniweb-discovery)
- [ImmuniWeb® Discovery vs Trickest ASM - Attack Surface Management](https://cybersectools.com/compare/immuniweb-discovery-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 ImmuniWeb® Discovery alternatives](https://cybersectools.com/alternatives/immuniweb-discovery)
- [See all SurfaceDiff alternatives](https://cybersectools.com/alternatives/surfacediff)

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Source: https://cybersectools.com/compare/immuniweb-discovery-vs-surfacediff

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

More on ImmuniWeb® Discovery 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