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StepTrigger: Contact-State-Triggered Backdoor Attacks on VLM-Powered Legged Robots

StepTrigger is a contact-state-triggered backdoor attack on VLM-powered legged robots. The trigger signal comes from the foot-ground contact pressure patterns produced when a Unitree Go1 quadruped walks across dense terrain, rather than from prompts or visible markers.

Part of the event: StepTrigger: Foot-ground contact triggers robot backdoor

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