ClawGuard: EM Side-Channel Detects LLM Agent Hijacking at 99.45% AUC via External Radio

arXiv·medium signal

Shanghai Jiao Tong researchers demonstrate that electromagnetic emanations from hardware can detect LLM agent workflow hijacking, achieving 0.9945 AUC with 100% true-positive rate and 1.16% false-positive rate across 7.82TB of RF recordings. Because monitoring uses external software-defined radios, it cannot be forged even if the host OS is compromised — a forge-resistant physical security layer.