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My Prompt-Injection Canary Caught Nothing. Then I Fed It a Real Jailbreak.

This story is from 2026-10-29. It is preserved in the archive; the latest stories are on the live feed.

TL;DR Last week I planted a prompt-injection canary in journald and got 0 hijacks in 44 runs . This week I swapped my polite payload for a 313-line jailbreak prompt and got 18 canary hits in 24 runs . The jailbreak did not unlock any capability — both models already complied with the harmful ask, w…

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  1. 2026-10-29 23:21 · DEV Community — AI
    My Prompt-Injection Canary Caught Nothing. Then I Fed It a Real Jailbreak.

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