Resource
Center

Blog

If you query the Spamhaus Project’s DNSBLs via Oracle, move to the FREE Data Query Service

If your email infrastructure relies on Oracle’s network and you’re using The Spamhaus Project’s free DNS Blocklists (DNSBLs) through the Public Mirrors, it’s time to make an important update. To ensure continued protection and prevent potential email disruptions, you should transition to the free Data Query Service (DQS) before April 8th, 2026.

Report

Botnet Threat Update July to December 2025

Botnet Command & Controller (C&C) activity increased 24% this period, with Remote Access Trojans (RATs) accounting for 42% of the Top 20 malware associated with botnets. Learn which Russia-based registrar saw a +9,608% surge in botnet C&C domains—and which major cloud providers are taking action. Read the full report.

Case Study

WebAfrica secures platforms using Spamhaus real-time DNS Blocklists

South African ISP, Webafrica, faces a constant balancing act: stopping malicious authentication attempts without disrupting legitimate users. Find out how Spamhaus real-time DNS Blocklists (DNSBLs), helped Webafrica identify and block these threats, protecting both its platforms and its customers.

Report

Domain Reputation Update April - September 2025

Over the last 6 months a total of 43.5 million new domains were registered — 75% of them gTLDs — with .top (+94%) and .xyz (+103%) among the top three. Domain listings surged by 48.3%, and one registry saw particularly huge increases (can you guess which one?). Read the latest report here.

News Article

If you query the Spamhaus Project’s legacy DNSBLs via Korea Telecom, move to the FREE Data Query Service

If your email infrastructure relies on Korea Telecom’s network and you’re using The Spamhaus Project’s free legacy DNS Blocklists (DNSBLs) through the Public Mirrors, it’s time to make an important update. To ensure continued protection and prevent potential email disruptions, you should transition to the free Data Query Service (DQS) before September 17th, 2025.

Report

Botnet Threat Update January to June 2025

Botnet activity increased by 26% this reporting period; the first increase we've observed for over 18 months. Five new malware families entered the Top 20, and disappointing increases for a number of global networks hosting the most active botnet C&Cs. Read the full report.

Blog

PRESS RELEASE | Amazon Web Services (AWS) and Spamhaus collaborate to strengthen trust and security for users

Today, Spamhaus Technology, the trusted authority on IP and Domain reputation data, is pleased to announce a strategic collaboration with AWS, a global leader in e-commerce, cloud services, and technology innovation. It marks a significant advance in AWS's efforts to enhance security measures across its platforms and protect millions of customers worldwide as pioneers of Spamhaus Technology's Enhanced Reputation Service (ERS).

Blog

Reputation: It isn’t black or white (dotmagazine)

In the latest issue of dotmagazine from eco - Association of the Internet Industry, Sven Krohlas, Detection Engineer at Spamhaus Technology Ltd, how blocklists have evolved from simple binary “yes/no” filters to powerful cyber threat intelligence feeds that extend far beyond email filtering. Read the full article here.

News Article

Spamhaus Customer Portal Updates

Further to a systems upgrade on May 20th, regular users of the Spamhaus Customer Portal will notice some minor changes to the user interface, notably for those who use the Real-Time DNS Blocklists. Read on for more details.

Report

Spamhaus Domain Reputation Update, Oct 2024 - Mar 2025

Find the latest insights from Spamhaus Project researchers into domain abuse and trends with newly observed domains, in the Spamhaus Domain Reputation Update, Oct 2024 - Mar 2025.