GROB: A Multi-Agent Architecture for Public-Trace Investigation of Candidate Agentic Activity

The paper introduces GROB, a multi‑agent system designed to investigate potential autonomous‑agent activity using only publicly available Internet traces when privileged telemetry is not accessible. GROB collects read‑only public traces and stores selected observations for future analysis. In a September 2026 dataset, some traces gained additional meaning as new public evidence appeared, notably Census‑labelled identifiers that were later linked to specific Census requests, while other traces showed weaker or uncertain connections to later evidence. The study concludes that sparse public traces can remain useful for later reconstruction, but they alone cannot establish organizational attribution, and the continuity of agent identity remains an open research question.

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