Keep ahead of the threat By identifying spammers, bot herders and cyber criminals, Spamhaus protects three billion mailboxes worldwide, every day.

Protecting Mail Streams

90% of the world's email traffic is spam

Spamhaus researchers have been combatting the onslaught of spam since 1998 and continue to provide the latest security threat intelligence to organizations worldwide.

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Protecting Networks

Outbound botnet and other C&C traffic

Spamhaus IP-based and domain-based threat intelligence is a vital layer of your network defenses, preventing connections to malicious and hijacked domains.

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Trusted by many of the biggest brands in the world:

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Threat intelligence constantly refined and distributed

In a world where threats from cyber criminals are growing and relentless, protecting the digital economy requires the most comprehensive and accurate information about their activities.

Internet Service Providers, hosting companies, corporations, security vendors and law enforcement collaborate through Spamhaus by providing anonymised, secure information about the threats and malicious activity they have seen attack their networks.

Since 1998, we have been at the forefront of tracking spam and related cyber threats such as phishing, malware and botnets to provide real-time actionable and highly accurate threat intelligence.

The result – the most comprehensive view of cyber criminals’ activities that acts as an advance warning and protection against their constantly evolving activities.

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Latest News

Brian Krebs | Bitcanal - "Hijack Factory" Shunned from Web

Brian Krebs covers the Bitcanal "Hijack Factory" story which hit the news this week. In the article Krebs highlights that virtually all of Bitcanal's IP address ranges had been listed by Spamhaus.

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Doug Madory | Shutting down the BGP Hijack Factory - Bitcanal

This week sees Spamhaus featuring in the news again. Bitcanal, a notorious bad actor, who has continually hijacked Border Gateway Protocol (BGP) routes, has effectively been kicked off the internet. Doug Madory, Director of Internet Analysis at Oracle Dyn, takes an in-depth look at the story: Shutting down the BGP Hijack Factory.

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