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Your AGENTS.md Is an Attack Surface: How a Trusted File Hijacked Codex and Claude Code

This story is from 2026-10-27. It is preserved in the archive; the latest stories are on the live feed.

By Sarah Reid, Securetron. I work at Securetron, and this article explains research into a prompt-injection technique affecting AI coding agents — and the controls that help stop it. AGENTS.md was meant to make coding agents more useful. Put project instructions in one file, and the agent follows t…

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  1. 2026-10-27 14:14 · DEV Community — AI
    Your AGENTS.md Is an Attack Surface: How a Trusted File Hijacked Codex and Claude Code

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