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Build a 100-line checker that catches chained-skill approval hijacks

This story is from 2026-10-06. It is preserved in the archive; the latest stories are on the live feed.

Two agent skills, each harmless when read on its own, can get an agent to upload a report the user never agreed to share. The trick is a progress file. The first skill writes it; the second one trusts it. This post builds a small stdlib Python checker that shows the pattern and shows where a per-sk…

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  1. 2026-10-06 08:29 · DEV Community — AI
    Build a 100-line checker that catches chained-skill approval hijacks

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