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UAT-8099 Hijacks Reputable Sites for SEO Fraud & Theft

ID: cab14d3e-9f6e-5737-a6fb-89f22a3594c1

STIX ID: report--cab14d3e-9f6e-5737-a6fb-89f22a3594c1

Feed Name: Dark Reading

Threat Score
70/100

Date Published: 2025-10-03

Date Updated: 2026-05-05

Author: Nate Nelson, Contributing Writer

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Cisco Talos researchers documented UAT-8099, a cybercrime campaign that hijacks Internet-facing IIS servers at reputable organizations worldwide to install 'BadIIS' implants for SEO poisoning and redirection, deploy Cobalt Strike for persistence, and exfiltrate credentials and certificates for resale or follow-on attacks, while remaining largely invisible to site owners and users.

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