Prompt injection is the placing of instructions inside an AI system’s input, written to change what the system does rather than to inform it, either typed in directly or hidden in content the system reads.

This is one entry in The Knowledge Company claim register: a statement the company publishes, the source it was checked against, the date of the last check and the date that check expires. When the stale-after date passes, the status degrades on its own until a person re-verifies the claim. Nothing is marked verified automatically.