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Water Saci Threat Evolves with AI and Multi-Format Malware via WhatsApp

Water Saci Threat Evolves with AI and Multi-Format Malware via WhatsApp

First seen 4 Dec 2025, 19:42 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 13:27 UTC

The Water Saci threat operation has advanced its tactics by using WhatsApp to distribute malicious HTML Application files and PDFs targeting Brazilian users. Attackers are leveraging AI for code conversion and employing a layered infection chain that includes various file formats and scripting languages to enhance malware delivery and propagation.

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