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Fake Claude AI Site Drops Beagle Backdoor on Windows Users

·Source: Infosecurity Magazine

Updated:

Executive Summary

Sophos finds fake Claude site spreading DonutLoader and a new Beagle backdoor via DLL sideloading

Analysis

Sophos finds fake Claude site spreading DonutLoader and a new Beagle backdoor via DLL sideloading
Source Attribution

Originally published by Infosecurity Magazine on May 7, 2026.

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