Why We Love Sharing: Spamhaus now incorporates our Blocklist

No single organization can see it all—by working together, we build stronger defenses for everyone. At PhishFort, we work every day to detect phishing domains, brand impersonations, and scam infrastructure targeting Web3 users and beyond. But identifying threats is only part of the picture.

What happens next—what we do with that information—is just as important. Turning these identified threats into enforceable actions is key to safeguarding users, because detection alone doesn’t stop attacks from reaching their targets.

And reaching over 450 million monthly active users with our blocklist is not enough to keep the internet safe. That’s why we’re working with Spamhaus, a globally respected authority in internet threat intelligence, to share verified phishing and scam domains from our detection systems. This allows the threats we uncover to be blocked not just for our clients, but across a much broader security ecosystem, now benefiting billions of users globally.

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Who Is Spamhaus?

If you work in threat intelligence, chances are you already know Spamhaus.

They’ve spent more than two decades maintaining some of the internet’s most widely used DNS-based blocklists—data that helps combat spam, malware distribution, phishing infrastructure, and other abuse. Their work is trusted by ISPs, email providers, network operators, browser developers, antivirus vendors, and more.

What makes Spamhaus stand out is their focus on operational neutrality and accuracy. Their blocklists are widely adopted because of the quality of the data—and because they maintain clear, responsible criteria for listing.

For us at PhishFort, this made them a natural match. We don’t just detect phishing. We take responsibility for ensuring that the data we generate is actionable beyond our own environment.

What PhishFort Shares

PhishFort specializes in phishing and impersonation detection, particularly in Web3 and high-risk verticals.

What we share with Spamhaus is a real-time blocklist of verified phishing and impersonation domains. This data is reviewed by our internal team and updated continuously by PhishFort specialists, based on findings from both AI monitoring and experts focused on cryptocurrency-related risks.

By providing intelligence to Spamhaus’s broader infrastructure, it becomes available to a far wider audience than PhishFort’s direct customers—helping to stop threats earlier by limiting their reach to end users.

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Why We’re Doing This

The security landscape has changed. Threats don’t stay in one place. Attackers pivot quickly, often repurposing infrastructure across campaigns and industries. If we don’t share threat data, we fall behind.

At PhishFort, we believe that phishing prevention works best when defenders work together. By sharing our data with Spamhaus:

• We expand the reach of our detections to billions of users
  
  
• We support faster response times across ISPs, email providers, and browsers
  
  
• We contribute to an open, accurate, and community-driven approach to blocking malicious content
  
  

This collaboration is one piece of our larger effort to support collective resilience—not just for our clients, but for the broader internet.

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A Shared Mission

Spamhaus’ values align closely with ours: precision, transparency, and a long-term commitment to reducing online abuse.

Like PhishFort, Spamhaus understands that real progress in threat mitigation comes from community action—not just product features or closed platforms.

We’re proud to contribute data that supports their mission, and we’re equally proud to support a more open and resilient security ecosystem.

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Free Tools for the Community

Beyond data sharing, we also develop tools for users directly. Nighthawk, our free browser extension for Chrome, Firefox, and Brave, delivers real-time warnings when users visit known phishing domains. It’s one way we help Web3 users stay protected—even if they aren’t our clients.

Just like our data sharing with Spamhaus, Nighthawk reflects our belief that accessible tools and open collaboration are key to online safety.

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Looking Ahead

Threat actors innovate quickly. But so do defenders—when they share.

At PhishFort, we’ll continue detecting threats, refining our data, and sharing it with the organizations who can act on it. Spamhaus is one of the most trusted in that category, and we’re glad to be working together to reduce harm across the internet.

If you’re part of this community—whether you’re managing an abuse inbox, running threat intel, or protecting a brand—thank you. The only way we make a difference is together.

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