# crt.guru vs Halo Security External Attack Surface Management: side-by-side comparison (2026)

[crt.guru](https://cybersectools.com/tools/crtguru) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [Crt.guru](https://cybersectools.com/companies/crtguru). [Halo Security External Attack Surface Management](https://cybersectools.com/tools/halo-security-external-attack-surface-management) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [Halo Security](https://cybersectools.com/companies/halo-security). 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

| | crt.guru | Halo Security External Attack Surface Management |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | External Attack Surface Management | External Attack Surface Management |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | Mid-Market, Enterprise |
| Company | Crt.guru | Halo Security |
| Headquarters | – | – |

### Use cases and capabilities

| | crt.guru | Halo Security External Attack Surface Management |
|---|---|---|
| TLS | Yes | – |
| SSL | Yes | – |
| PCI DSS | Yes | – |
| NIST | Yes | – |
| Security Scanning | Yes | – |
| Alerting | Yes | – |
| Security Compliance Training | Yes | – |
| Security Reporting | Yes | – |
| Vulnerability | Yes | – |
| REST API | Yes | – |
| OWASP | – | Yes |

### Core features

**crt.guru**

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

**Halo Security External Attack Surface Management**

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

### Integrations

**crt.guru**

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

**Halo Security External Attack Surface Management**

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

## Which one fits you

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

- [crt.guru](https://cybersectools.com/tools/crtguru) fits if you are a startup or a small business.

## crt.guru vs Halo Security External Attack Surface Management FAQ

Common questions when comparing crt.guru vs Halo Security External Attack Surface Management for external attack surface management.

### What is the difference between crt.guru and Halo Security External Attack Surface Management?

**crt.guru**: External TLS cert monitoring with expiry alerts, vuln scanning & compliance reports, built by Crt.guru.

**Halo Security External Attack Surface Management**: External attack surface management platform for asset discovery and monitoring, built by Halo Security.

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

### Who makes crt.guru and Halo Security External Attack Surface Management?

**crt.guru** is made by Crt.guru. **Halo Security External Attack Surface Management** is made by Halo Security. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is crt.guru a good alternative to Halo Security External Attack Surface Management?

Often, yes. crt.guru and Halo Security External Attack Surface Management are both External Attack Surface Management products. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [crt.guru vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-crtguru)
- [crt.guru vs Assetnote Exposure Engine](https://cybersectools.com/compare/assetnote-exposure-engine-vs-crtguru)
- [crt.guru vs SurfaceDiff](https://cybersectools.com/compare/crtguru-vs-surfacediff)
- [Halo Security External Attack Surface Management vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-halo-security-external-attack-surface-management)
- [Halo Security External Attack Surface Management vs Assetnote Exposure Engine](https://cybersectools.com/compare/assetnote-exposure-engine-vs-halo-security-external-attack-surface-management)
- [Halo Security External Attack Surface Management vs SurfaceDiff](https://cybersectools.com/compare/halo-security-external-attack-surface-management-vs-surfacediff)

## Alternatives to each

- [See all crt.guru alternatives](https://cybersectools.com/alternatives/crtguru)
- [See all Halo Security External Attack Surface Management alternatives](https://cybersectools.com/alternatives/halo-security-external-attack-surface-management)

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Source: https://cybersectools.com/compare/crtguru-vs-halo-security-external-attack-surface-management

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

More on crt.guru and Halo Security External Attack Surface Management: 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