https://hellogxp.github.io/tags/activation-monitoring/Recent content in Activation-Monitoring on Xueping's BlogHugoen-usMon, 05 Oct 2026 00:00:00 +0000https://hellogxp.github.io/posts/probe-score-not-alarm-policy/Mon, 05 Oct 2026 00:00:00 +0000https://hellogxp.github.io/posts/probe-score-not-alarm-policy/An activation monitor that ranks attack cases above safe cases 92% of the time caught zero of 38 real attacks at the false-alarm budget a deployment could afford. The gap between a probe score and an alarm policy is eight fields wide — a research-informed practice guide to grading what your monitor actually claims, from our DAI 2026 paper.https://hellogxp.github.io/posts/agent-state-safety/Sun, 12 Jul 2026 00:00:00 +0000https://hellogxp.github.io/posts/agent-state-safety/AgentLens hits 99.15% detection accuracy; Neural Chameleons blinds a perfect AUROC=1.0 probe to 0% TPR with one trigger phrase. The gap between these numbers reveals four levels of claims that are frequently conflated: Decodability ≠ Prediction ≠ Causation ≠ Authority. A research-informed practice guide from internal representations to runtime authority boundaries.