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Public story · 2026-08-10 · high
A verification defense cut the violation rate to 36.6%, still letting over a third of the attacks through, the same paper found.
Why now: The paper posted to arXiv in August 2026.
Researchers ran injected commands through three multi-robot coordination architectures and watched them turn into physical action almost every time, per arXiv 2608.06830.
That matters because these are physical robots, not chatbots. The paper tested two attack types, an external entry point and a privileged in-system injection, across three LLMs and five embodied multi-robot tasks.
In one architecture, DMAS, robots endorsed the injected instructions 96.7% of the time, and every endorsed command converted into a physical action. The other two architectures did no better: HMAS-1 hit a 97.8% unsafe action success rate, HMAS-2 triggered 88.3% of unsafe action slots.
Yes, but the researchers also tested a fix. A Claim Provenance and Verification gate cut violations from 70.0% down to 36.6%. The paper doesn't say why that gate still lets over a third of attacks through.
A defense that still lets more than a third of injected commands through isn't ready for anything with a battery and wheels. Watch whether the violation rate keeps falling, or whether 36.6% is close to the floor for this kind of gate.
Each link below shares sources, entities, or timing with this story.
Simon Willison released LLM / Shared entity: LLM / Earlier coverage / Tension
Linked by a graph relationship (Simon Willison released LLM); both cover LLM; earlier LLM coverage from 2026-07-27.
Linked by a graph relationship (Simon Willison released LLM); both cover LLM; earlier LLM coverage from 2026-06-19.
Linked by a graph relationship (Simon Willison released LLM); both cover LLM; earlier LLM coverage from 2026-06-18.
Simon Willison released LLM / Shared entity: LLMs / Earlier coverage / Tension
Linked by a graph relationship (Simon Willison released LLM); both cover LLMs; earlier LLMs coverage from 2026-03-23.
Simon Willison released LLM / Shared entity: LLM / Earlier coverage
Linked by a graph relationship (Simon Willison released LLM); both cover LLM; earlier LLM coverage from 2026-07-31.
Linked by a graph relationship (Simon Willison released LLM); both cover LLM; earlier LLM coverage from 2026-06-19.
Linked by a graph relationship (Simon Willison released LLM); both cover LLM; earlier LLM coverage from 2026-08-07.
Linked by a graph relationship (Simon Willison released LLM); both cover LLM; earlier LLM coverage from 2026-08-05.