# Attic M365 FREE vs PhishingBox KillPhish: side-by-side comparison (2026)

[Attic M365 FREE](https://cybersectools.com/tools/attic-free) is a commercial [anti-phishing](https://cybersectools.com/categories/anti-phishing) solution by [Attic Security](https://cybersectools.com/companies/attic-security). [PhishingBox KillPhish](https://cybersectools.com/tools/phishingbox-killphish) is a commercial [anti-phishing](https://cybersectools.com/categories/anti-phishing) solution by [PhishingBox](https://cybersectools.com/companies/phishingbox). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Attic M365 FREE | PhishingBox KillPhish |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Anti-Phishing | Anti-Phishing |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | Startup, SMB | Startup, SMB, Mid-Market, Enterprise |
| Company | Attic Security | PhishingBox |
| Headquarters | – | – |

### Use cases and capabilities

| | Attic M365 FREE | PhishingBox KillPhish |
|---|---|---|
| Microsoft | Yes | – |
| Office 365 | Yes | – |
| Browser Security | Yes | – |
| Microsoft 365 | – | Yes |

### Core features

**Attic M365 FREE**

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

**PhishingBox KillPhish**

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

### Integrations

**Attic M365 FREE**

1 integration listed. Sign in on the page to see them.

**PhishingBox KillPhish**

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.

- [PhishingBox KillPhish](https://cybersectools.com/tools/phishingbox-killphish) fits if you are a mid-market company or an enterprise.

## Attic M365 FREE vs PhishingBox KillPhish FAQ

Common questions when comparing Attic M365 FREE vs PhishingBox KillPhish for anti-phishing.

### What is the difference between Attic M365 FREE and PhishingBox KillPhish?

**Attic M365 FREE**: Protects Microsoft 365 users from phishing attacks using fake login pages. Built by Attic Security.

**PhishingBox KillPhish**: Email threat scanning and reporting add-in for Microsoft 365 and Google. Built by PhishingBox.

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

### Who makes Attic M365 FREE and PhishingBox KillPhish?

**Attic M365 FREE** is made by Attic Security. **PhishingBox KillPhish** is made by PhishingBox. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Attic M365 FREE a good alternative to PhishingBox KillPhish?

Often, yes. Attic M365 FREE and PhishingBox KillPhish are both Anti-Phishing products. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Attic M365 FREE vs Detect-Phish](https://cybersectools.com/compare/attic-free-vs-detect-phish)
- [Attic M365 FREE vs SpamTitan PhishTitan](https://cybersectools.com/compare/attic-free-vs-spamtitan-phishtitan)
- [Attic M365 FREE vs Vade for M365](https://cybersectools.com/compare/attic-free-vs-vade-for-m365)
- [PhishingBox KillPhish vs Detect-Phish](https://cybersectools.com/compare/detect-phish-vs-phishingbox-killphish)
- [PhishingBox KillPhish vs SpamTitan PhishTitan](https://cybersectools.com/compare/phishingbox-killphish-vs-spamtitan-phishtitan)
- [PhishingBox KillPhish vs Vade for M365](https://cybersectools.com/compare/phishingbox-killphish-vs-vade-for-m365)

## Alternatives to each

- [See all Attic M365 FREE alternatives](https://cybersectools.com/alternatives/attic-free)
- [See all PhishingBox KillPhish alternatives](https://cybersectools.com/alternatives/phishingbox-killphish)

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Source: https://cybersectools.com/compare/attic-free-vs-phishingbox-killphish

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

More on Attic M365 FREE and PhishingBox KillPhish: 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