BADIIS Malware Compromises 1,800+ Windows Servers for SEO Poisoning

BADIIS Malware Compromises 1,800+ Windows Servers for SEO Poisoning

First seen 13 Feb 2026, 07:08 UTC •GbhackersCybersecuritynewsCyberpressEsecurityplanetThe420.In •88% similarity •32.6

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ThreatCluster

A cyber campaign has compromised over 1,800 Windows servers worldwide using BADIIS malware. This malware specifically targets Internet Information Services (IIS) environments, converting legitimate servers into a network for SEO poisoning, promoting illegal gambling sites and fraudulent cryptocurrency operations.

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Timeline

2026-02-13
BADIIS malware discovered affecting over 1,800 Windows servers

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Ref4033 BadIIS Uat-8099 Windows Malware