Malware That Asks Claude What You’re Worth: The VOLTA Infostealer, Anthropic’s New Watermark, and What Actually Protects You

A bright white desk with three neat stacks of blank index cards of different heights, a magnifying glass and a closed laptop
Cisco Talos describes a Windows infostealer that sends a victim’s stolen data to an AI model, Claude Opus 4.6 by default, to rank what the person is worth, and falls back to other models if one refuses. In the same week, Anthropic extends its text watermark to older Claude models. What the research says, what it doesn’t, why a watermark is a label and not a lock, and what businesses and users can do.
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