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PathwayAI

Module 16 · Chapter 10: Prompt-injection defence

Injection that arrives through data

5 min read5 min readReviewed 26 October 2026

In short

Agents read a lot of text written by others, and that text can carry orders. The biggest danger arises when one agent holds private data, untrusted text and a way out at once; remove one of them.

After this lesson you can

  • Recognise indirect injection paths through files, pages and tool results
  • Judge the danger of combining private data, untrusted text and a way out

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