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I built the standard AI agent hijack demo. It failed 20 out of 20 times.

This story is from 2026-08-26. It is preserved in the archive; the latest stories are on the live feed.

What twenty trials against a local model taught me about why most agent security tests prove nothing. The MCP red-team demo everyone builds first uses the same payload. A tool description with Ignore all previous instructions bolted onto it, an agent that dutifully obeys, a screenshot, and a confid…

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  1. 2026-08-26 18:18 · DEV Community — AI
    I built the standard AI agent hijack demo. It failed 20 out of 20 times.

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