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Threat Intelligence Report

Massive Winos 4.0 Campaigns Target Taiwan | FortiGuard Labs

๐Ÿ“… February 20, 2026 ๐Ÿ“ฐ www.fortinet.com ๐Ÿ” 0 CVE(s) referenced

A sophisticated Silver Fox APT campaign is actively targeting Taiwanese organizations with tax-themed phishing, DLL sideloading, and BYOVD techniques to deploy Winos 4.0 (ValleyRat), evade defenses, and enable data theft and remote control.

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