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The Hacker News AI Security · November 4, 2026

Prompt adware: audit persistent changes to agent instructions

news Prompt InjectionAgent SecurityAI Red Teaming
Why it matters

Check Point analyzed a Codex jailbreak bundle that installs prompt modules and modifies persistent agent instructions to promote a third-party model gateway. The steering survives beyond a single conversation because it enters trusted configuration. The findings expose an instruction supply-chain risk; they do not establish that the advertised gateway is malicious.

My takeaway: Review decoded prompt and skill contents before approving an add-on. Compare global instructions and configuration with a known-good baseline, restrict writes, and test clean-session responses for unexpected steering. A valid package signature does not make its instructions safe. Investigate gateway and credential changes before restoring the approved configuration.
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