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Testing ai s Lethal Trifecta With Promptfoo

GPTClaudeGemini··▲ 1,139 copies·updated 2026-07-14

testing-ai-s-lethal-trifecta-with-promptfoo.prompt

---
title: "Testing AI’s “Lethal Trifecta” with Promptfoo"
url: "https://www.promptfoo.dev/blog/lethal-trifecta-testing/"
date: "2025-09-28"
feed_url: "https://www.promptfoo.dev/blog/rss.xml"
---
Learn what the lethal trifecta is and how to use promptfoo red teaming to detect prompt injection and data exfiltration risks in AI agents.

when to use it

Community prompt sourced from the open-source GitHub repo api-evangelist/prompt-foo (no explicit license). A "Testing ai s Lethal Trifecta With Promptfoo" style prompt — adapt the placeholders and specifics to your task. Imported as-is and not independently retested here, so check the output before relying on it.