PIER for injection triage
Recall a four-part triage pattern for suspected prompt injection.
PIER What does PIER stand for in prompt injection triage? Use it when text tries to steer the model. Objection: The model already has an instruction to ignore attacks. The model already has an instruction to ignore attacks. Prompt-only defense Your line Good as guidance, not enough as a boundary. We still need to know provenance, exposure, and whether tools are constrained. Treating a model reminder as the whole mitigation. It respects the existing prompt while moving the conversation to concrete controls. Direct versus indirect injection Source matters Both can manipulate behavior, but the control path differs. What is the…
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