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arXiv AI By Hasan Demirkiran, Jens Ernstberger

Language Is a Security Surface for Agent Guards

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The study investigates whether the language of a user’s instruction affects the safety verdicts of agent guards. By translating 1,220 labeled steps from an English benchmark into German, French, Turkish, Swahili, and Amharic while keeping all other data identical, the authors find that many open, small, and purpose‑built guards alter their verdicts when the instruction is translated, with larger effects for rarer languages. The impact varies with guard size, with smaller models showing greater loss of recall and larger models (e.g., Gemini 3.8 Flash) remaining largely unchanged.

Machine-generated by The Flow from the publisher's headline and feed description — not written or checked by a human. The full article lives at arXiv AI.

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