New macOS XCSSET Variant Targets Firefox with Clipper and Persistence Module

Cybersecurity researchers have discovered an updated version of a known Apple macOS malware called XCSSET that has been observed in limited attacks. "This new variant of XCSSET brings key changes related to browser targeting, clipboard hijacking, and persistence mechanisms," the Microsoft Threat Intelligence team said in a Thursday report. "It employs sophisticated encryption and obfuscation

source https://thehackernews.com/2025/09/new-macos-xcsset-variant-targets.html