# Nightfall Data Loss Prevention vs Theodosian: side-by-side comparison (2026)

[Nightfall Data Loss Prevention](https://cybersectools.com/tools/nightfall-data-loss-prevention) is a commercial [data loss prevention](https://cybersectools.com/categories/dlp) solution by [Nightfall AI](https://cybersectools.com/companies/nightfall-ai). [Theodosian](https://cybersectools.com/tools/theodosian) is a commercial [data loss prevention](https://cybersectools.com/categories/dlp) solution by [Theodosian](https://cybersectools.com/companies/theodosian). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Nightfall Data Loss Prevention | Theodosian |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Data Loss Prevention | Data Loss Prevention |
| Verified | No | No |
| Deployment type | Cloud | Hybrid |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | Nightfall AI | Theodosian |
| Headquarters | – | – |

### Use cases and capabilities

| | Nightfall Data Loss Prevention | Theodosian |
|---|---|---|
| Data Exfiltration | Yes | – |
| Sensitive Data | Yes | – |
| File Analysis | – | Yes |

### Core features

**Nightfall Data Loss Prevention**

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

**Theodosian**

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

### Integrations

**Nightfall Data Loss Prevention**

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

**Theodosian**

4 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.

- [Nightfall Data Loss Prevention](https://cybersectools.com/tools/nightfall-data-loss-prevention) fits if you want a cloud product.
- [Theodosian](https://cybersectools.com/tools/theodosian) fits if you need both cloud and on-premises options and you are a startup.

## Nightfall Data Loss Prevention vs Theodosian FAQ

Common questions when comparing Nightfall Data Loss Prevention vs Theodosian for data loss prevention.

### What is the difference between Nightfall Data Loss Prevention and Theodosian?

**Nightfall Data Loss Prevention**: AI-powered DLP platform for SaaS, AI apps, and endpoints. Built by Nightfall AI.

**Theodosian**: File-level encryption and access control for data-centric security. Built by Theodosian.

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

### Who makes Nightfall Data Loss Prevention and Theodosian?

**Nightfall Data Loss Prevention** is made by Nightfall AI. **Theodosian** is made by Theodosian. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Nightfall Data Loss Prevention a good alternative to Theodosian?

Often, yes. Nightfall Data Loss Prevention and Theodosian are both Data Loss Prevention products. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Nightfall Data Loss Prevention vs Fortra DLP](https://cybersectools.com/compare/fortra-dlp-vs-nightfall-data-loss-prevention)
- [Nightfall Data Loss Prevention vs MIND Autonomous DLP](https://cybersectools.com/compare/nightfall-data-loss-prevention-vs-mind-autonomous-dlp)
- [Nightfall Data Loss Prevention vs Jazz](https://cybersectools.com/compare/jazz-security-vs-nightfall-data-loss-prevention)
- [Theodosian vs Fortra DLP](https://cybersectools.com/compare/fortra-dlp-vs-theodosian)
- [Theodosian vs MIND Autonomous DLP](https://cybersectools.com/compare/mind-autonomous-dlp-vs-theodosian)
- [Theodosian vs Jazz](https://cybersectools.com/compare/jazz-security-vs-theodosian)

## Alternatives to each

- [See all Nightfall Data Loss Prevention alternatives](https://cybersectools.com/alternatives/nightfall-data-loss-prevention)
- [See all Theodosian alternatives](https://cybersectools.com/alternatives/theodosian)

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Source: https://cybersectools.com/compare/nightfall-data-loss-prevention-vs-theodosian

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

More on Nightfall Data Loss Prevention and Theodosian: 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