Unverified60% confidenceFactExact time
Prompt injection was first proposed by security researcher Riley Goodside in 2022.
2
Sources
60%
Confidence
Long-term
Relevance
7/11/2026
First Seen
Sources
Prismata Analysis: How to Defend Web Agents Against Cross-Site Prompt Injection Attacks
hackernewshackernews7/10/2026
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