# DDactic Attack Surface Discovery vs Shodan: side-by-side comparison (2026)

[DDactic Attack Surface Discovery](https://cybersectools.com/tools/ddactic-attack-surface-discovery) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [DDactic](https://cybersectools.com/companies/ddactic). [Shodan](https://cybersectools.com/tools/shodan) 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

| | DDactic Attack Surface Discovery | Shodan |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | External Attack Surface Management | External Attack Surface Management |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | DDactic | – |
| Headquarters | – | – |

### Use cases and capabilities

| | DDactic Attack Surface Discovery | Shodan |
|---|---|---|
| Subdomain Enumeration | Yes | – |
| Vulnerability | Yes | – |
| DDoS | Yes | – |
| DNS Security | Yes | – |
| Network Scanning | Yes | – |
| Security Scanning | Yes | – |
| Port Scanning | Yes | – |
| SSL | Yes | – |
| Data Breach | Yes | – |
| Reconnaissance | Yes | – |
| Network Monitoring | – | Yes |

### Core features

**DDactic Attack Surface Discovery**

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

**Shodan**

No features listed.

### Integrations

**DDactic Attack Surface Discovery**

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

**Shodan**

No integrations listed.

## Which one fits you

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

- [DDactic Attack Surface Discovery](https://cybersectools.com/tools/ddactic-attack-surface-discovery) fits if you are a startup.
- [Shodan](https://cybersectools.com/tools/shodan) fits if you need a free product.

## DDactic Attack Surface Discovery vs Shodan FAQ

Common questions when comparing DDactic Attack Surface Discovery vs Shodan for external attack surface management.

### What is the difference between DDactic Attack Surface Discovery and Shodan?

**DDactic Attack Surface Discovery**: Scans domains to discover attack surface, vulnerabilities, and generate hardening. Built by DDactic.

**Shodan**: A search engine for the Internet of Things (IoT) that discovers and monitors devices connected to the internet.

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

### Is DDactic Attack Surface Discovery a good alternative to Shodan?

Often, yes. DDactic Attack Surface Discovery and Shodan are both External Attack Surface Management products. Key differences: DDactic Attack Surface Discovery is Commercial while Shodan is Free. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [DDactic Attack Surface Discovery vs SurfaceDiff](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-surfacediff)
- [DDactic Attack Surface Discovery vs MGM Security Partners recon me](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-mgm-security-partners-recon-me)
- [DDactic Attack Surface Discovery vs Cylana EASM](https://cybersectools.com/compare/cylana-easm-vs-ddactic-attack-surface-discovery)
- [Shodan vs SurfaceDiff](https://cybersectools.com/compare/shodan-vs-surfacediff)
- [Shodan vs MGM Security Partners recon me](https://cybersectools.com/compare/mgm-security-partners-recon-me-vs-shodan)
- [Shodan vs Cylana EASM](https://cybersectools.com/compare/cylana-easm-vs-shodan)

## Alternatives to each

- [See all DDactic Attack Surface Discovery alternatives](https://cybersectools.com/alternatives/ddactic-attack-surface-discovery)
- [See all Shodan alternatives](https://cybersectools.com/alternatives/shodan)

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Source: https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-shodan

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

More on DDactic Attack Surface Discovery and Shodan: 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