# SANS Internet Storm Center vs zvelo PhishBlocklist™: side-by-side comparison (2026)

[SANS Internet Storm Center](https://cybersectools.com/tools/sans-internet-storm-center) is a free [threat intel feeds](https://cybersectools.com/categories/threat-intel-feeds) solution. [zvelo PhishBlocklist™](https://cybersectools.com/tools/zvelo-phishblocklisttm) is a commercial [threat intel feeds](https://cybersectools.com/categories/threat-intel-feeds) solution by [Zvelo](https://cybersectools.com/companies/zvelo). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | SANS Internet Storm Center | zvelo PhishBlocklist™ |
|---|---|---|
| Pricing model | Free | Commercial |
| Category | Threat Intel Feeds | Threat Intel Feeds |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | – | Zvelo |
| Headquarters | – | – |

### Use cases and capabilities

| | SANS Internet Storm Center | zvelo PhishBlocklist™ |
|---|---|---|
| Log Management | Yes | – |
| Threat Feed | – | Yes |
| URL Filtering | – | Yes |
| Cyber Threat Intelligence | – | Yes |

### Core features

**SANS Internet Storm Center**

No features listed.

**zvelo PhishBlocklist™**

10 features 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.

- [SANS Internet Storm Center](https://cybersectools.com/tools/sans-internet-storm-center) fits if you are a startup and you need a free product.

## SANS Internet Storm Center vs zvelo PhishBlocklist™ FAQ

Common questions when comparing SANS Internet Storm Center vs zvelo PhishBlocklist™ for threat intel feeds.

### What is the difference between SANS Internet Storm Center and zvelo PhishBlocklist™?

**SANS Internet Storm Center**: A collaborative platform that gathers and analyzes security data to help professionals identify and mitigate cyber threats.

**zvelo PhishBlocklist™**: Curated phishing threat intelligence feed with predictive detection, built by Zvelo.

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

### Is SANS Internet Storm Center a good alternative to zvelo PhishBlocklist™?

Often, yes. SANS Internet Storm Center and zvelo PhishBlocklist™ are both Threat Intel Feeds products. Key differences: SANS Internet Storm Center is Free while zvelo PhishBlocklist™ is Commercial. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [SANS Internet Storm Center vs SecurityZones SURBL BV](https://cybersectools.com/compare/sans-internet-storm-center-vs-securityzones-surbl-bv)
- [SANS Internet Storm Center vs Netcraft Threat Feeds](https://cybersectools.com/compare/netcraft-threat-feeds-vs-sans-internet-storm-center)
- [SANS Internet Storm Center vs VMRay UniqueSignal](https://cybersectools.com/compare/sans-internet-storm-center-vs-vmray-uniquesignal)
- [zvelo PhishBlocklist™ vs SecurityZones SURBL BV](https://cybersectools.com/compare/securityzones-surbl-bv-vs-zvelo-phishblocklisttm)
- [zvelo PhishBlocklist™ vs Netcraft Threat Feeds](https://cybersectools.com/compare/netcraft-threat-feeds-vs-zvelo-phishblocklisttm)
- [zvelo PhishBlocklist™ vs VMRay UniqueSignal](https://cybersectools.com/compare/vmray-uniquesignal-vs-zvelo-phishblocklisttm)

## Alternatives to each

- [See all SANS Internet Storm Center alternatives](https://cybersectools.com/alternatives/sans-internet-storm-center)
- [See all zvelo PhishBlocklist™ alternatives](https://cybersectools.com/alternatives/zvelo-phishblocklisttm)

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Source: https://cybersectools.com/compare/sans-internet-storm-center-vs-zvelo-phishblocklisttm

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

More on SANS Internet Storm Center and zvelo PhishBlocklist™: 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