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The most abused top-level domains in 2018

ID: 4b02762b-b826-5517-8eba-5266435ad70f

STIX ID: report--4b02762b-b826-5517-8eba-5266435ad70f

Feed Name: The Spamhaus Project

Threat Score
60/100

Date Published: 2019-02-22

Date Updated: 2026-04-30

Author: The Spamhaus Team

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The report summarizes 2018 trends in abused TLDs for botnet command-and-control operations: .pw showed the largest increase (a 56% rise, ~4,835 additional C&Cs), .ru decreased and dropped out of the top ten, and several Freenom-operated free ccTLDs (.tk, .ml, .ga, .gg, .cf) entered the Top 20 due to abuse. It also warns about decentralized TLDs such as .bit, which are resistant to takedown, support anonymous registration, and can bypass standard DNS firewalls and RPZ protections.

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