Lesson 937 of 1570
AI and Hidden Instructions in Shared Documents
Why pasting a classmate's text into ChatGPT can hijack your AI session.
Lesson map
What this lesson covers
Learning path
The main moves in order
- 1The big idea
- 2prompt injection
- 3invisible text
- 4collaboration risk
Concept cluster
Terms to connect while reading
Section 1
The big idea
People can hide instructions in white text or document metadata that hijack AI when you paste their content. It's prompt injection — and it's already in classroom group projects.
Some examples
- A 'helpful summary' from a classmate makes ChatGPT lie to you.
- White-on-white text is invisible to you but readable to AI.
- PDFs and Google Docs both can hide injection payloads.
- Always paste suspect text into Notes first — it strips formatting.
Try it!
Copy any document you've received this week. Paste it into Notes or a plain-text editor and look for hidden white text.
Key terms in this lesson
End-of-lesson quiz
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