Recognize prompt injection as an input-boundary problem and name the minimum controls before an AI tool can act.
The core shift: prompt injection is not a chatbot quirk; it is an input-boundary failure. A cyber AI tool usually receives three classes of language: durable instructions from the system owner, task instructions from a user, and evidence from the outside world. Prompt injection tries to make the third class impersonate the first two. Boundary 1: Authority Policy, role, and allowed actions must come from trusted configuration, not from documents being analyzed. If an email can redefine the analyst's policy, the boundary has already failed. Boundary 2: Capability The model should not receive broad tool permissions just because the user…
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