A Russian-speaking threat actor known as “Trim” has spent the better part of 2026 systematically dismantling the guardrails on publicly available frontier AI models and rebuilding them as offensive tools. What started in March as a knowledge-sharing post on a Russian cybercrime forum detailing how to break Claude Opus into writing malware, had evolved by June into a fully productized, commercially marketed AI-powered penetration testing platform.Trim didn’t need a vulnerability to exploit. He didn’t need to build a novel AI, steal model weights, or compromise a datacenter. He simply picked powerful models off the shelf, figured out how to talk to them in the right way, and turned them into weapons. His story is not just one threat actor’s journey, it is a blueprint that the entire criminal underground is beginning to follow, and in his latest post he shares he is also utilizing a modified system prompt leaked from Fable! (Source: catonetworks.com)
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