Spamhaus
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LatestSourcesas of 2026-10-22
- One clear set of rules: the Spamhaus Sender Guidelines
Stay off Spamhaus blocklists with one clear set of rules. The Spamhaus Sender Guidelines bring everything mail server operators need into one place, from minimum requirements and DNS to permission, authentication and reputation. Plus, our built-in HELO/DNS checker shows instantl…
- Domain Reputation Update April - September 2026
57.1 million new domains registered (+21.8%), with China’s .cn (+77%) and .com.cn (+515%) responsible for much of the growth. Malicious and suspicious domain listings rose +56.6% to 3.37 million, hitting 1.15 million in September, our highest month on record! The culprit? Find o…
- Botnet Threat Update January to June 2026
Between Jan–Jun 2026 botnet C&C servers observed decreased -30% to 14,952. Sliver overtook Cobalt Strike for the #1 spot (+58%). Meanwhile .cn botnet C&C domains surged +771% and India's PDR registrar saw a +901% spike in abused registrations - though REGRU bucked the trend with…