Fake Claude Install Guide Delivers Six-Stage macOS Stealer and RAT, Huntress Finds

Security researchers at Huntress have reverse-engineered a previously undocumented macOS malware family, dubbed MacSync, after tracing an intrusion back to a malicious advertisement masquerading as installation instructions for Anthropic's Claude AI assistant. The infection began when a victim searched Google for guidance on installing Claude on a Mac and clicked a sponsored ad, leading to a six-stage stealer and remote access trojan (RAT).

Security researchers at Huntress have reverse-engineered a previously undocumented macOS malware family, dubbed MacSync, after tracing an intrusion back to a malicious advertisement masquerading as installation instructions for Anthropic’s Claude AI assistant. According to Huntress, the infection began when a victim searched Google for guidance on installing Claude on a Mac and clicked a sponsored … The post Fake Claude Install Guide Delivers Six-Stage macOS Stealer and RAT, Huntress Finds https://www.itsecurityguru.org/2026/07/30/fake-claude-install-guide-delivers-six-stage-macos-stealer-and-rat-huntress-finds/ appeared first on IT Security Guru https://www.itsecurityguru.org .