Donuts and Beagles: Fake Claude site spreads backdoor

Sophos X-Ops·20d·Reputable

A malicious imitation of Anthropic’s Claude site leads to DLL sideloading – and a backdoor Categories: Threat Research Tags: Claude, Beagle, Backdoor, malvertising, AI, DONUT, DLL sideloading, Sophos X-Ops

Categories cybersecurity · government-security

Original source / advisory ↗

Published

5/7/2026, 12:00:00 AM

Fetched

5/27/2026, 4:13:33 AM

Trust

reputable · 80/100

Language