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AI Worming through Word

A Simon Willison post covering a demonstrated technique for a self-propagating AI 'worm' that spreads through Microsoft Word documents, likely exploiting prompt injection against AI assistants (e.g. Copilot) that process document content to trigger further malicious document creation or actions. This illustrates how untrusted document content can hijack LLM-integrated productivity tools into replicating an attack across files or recipients.