# Attack Surface Scan vs Findomain: side-by-side comparison (2026)

[Attack Surface Scan](https://cybersectools.com/tools/attack-surface-scan) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [Attack Surface Scan](https://cybersectools.com/companies/attack-surface-scan). [Findomain](https://cybersectools.com/tools/findomain) is a free [external attack surface management](https://cybersectools.com/categories/external-asm) solution. 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

| | Attack Surface Scan | Findomain |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | External Attack Surface Management | External Attack Surface Management |
| Verified | No | No |
| Deployment type | Cloud | On-Premises |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| GitHub stars | – | 3,561 |
| Last commit | – | Sep 2025 |
| Company | Attack Surface Scan | – |
| Headquarters | – | – |

### Use cases and capabilities

| | Attack Surface Scan | Findomain |
|---|---|---|
| DNS Security | Yes | – |
| TLS | Yes | – |
| SSL | Yes | – |
| Subdomain Enumeration | Yes | Yes |
| Security Scanning | Yes | – |
| Alerting | Yes | – |
| Fingerprinting | Yes | – |
| DMARC | Yes | – |
| SPF | Yes | – |
| Security Reporting | Yes | – |
| OSINT | – | Yes |
| Port Scanning | – | Yes |
| Reconnaissance | – | Yes |
| Network Reconnaissance | – | Yes |

### Core features

**Attack Surface Scan**

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

**Findomain**

No features listed.

### Integrations

**Attack Surface Scan**

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

**Findomain**

No integrations listed.

## Which one fits you

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

- [Attack Surface Scan](https://cybersectools.com/tools/attack-surface-scan) fits if you want a cloud product.
- [Findomain](https://cybersectools.com/tools/findomain) fits if you need to run it on your own servers, you are a startup, you need a free product and you want an open-source product.

## Attack Surface Scan vs Findomain FAQ

Common questions when comparing Attack Surface Scan vs Findomain for external attack surface management.

### What is the difference between Attack Surface Scan and Findomain?

**Attack Surface Scan**: Agentless external attack surface monitoring with continuous change detection. Built by Attack Surface Scan.

**Findomain**: A domain reconnaissance tool that automates subdomain discovery, port scanning, and monitoring with support for multiple data sources and notification integrations.

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

### Who makes Attack Surface Scan and Findomain?

**Attack Surface Scan** is made by Attack Surface Scan. **Findomain** is open-source with 3,561 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Attack Surface Scan a good alternative to Findomain?

Often, yes. Attack Surface Scan and Findomain are both External Attack Surface Management products, and both cover Subdomain Enumeration. Key differences: Attack Surface Scan is Commercial while Findomain is Free, Findomain is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Attack Surface Scan vs SurfaceDiff](https://cybersectools.com/compare/attack-surface-scan-vs-surfacediff)
- [Attack Surface Scan vs MGM Security Partners recon me](https://cybersectools.com/compare/attack-surface-scan-vs-mgm-security-partners-recon-me)
- [Attack Surface Scan vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/attack-surface-scan-vs-ddactic-attack-surface-discovery)
- [Findomain vs SurfaceDiff](https://cybersectools.com/compare/findomain-vs-surfacediff)
- [Findomain vs MGM Security Partners recon me](https://cybersectools.com/compare/findomain-vs-mgm-security-partners-recon-me)
- [Findomain vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-findomain)

## Alternatives to each

- [See all Attack Surface Scan alternatives](https://cybersectools.com/alternatives/attack-surface-scan)
- [See all Findomain alternatives](https://cybersectools.com/alternatives/findomain)

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Source: https://cybersectools.com/compare/attack-surface-scan-vs-findomain

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More on Attack Surface Scan and Findomain: 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