Detection approach
Scroll velocity is perfectly constant. Human scrolling exhibits acceleration curves, deceleration, and micro-corrections. A near-zero variance indicates scripted scroll injection.
How this helps detect bots
Collect this signal alongside session context, request metadata, and other independent indicators. A single anomaly is a lead, not a verdict; corroborating anomalies make automated traffic more likely.
Legitimate traffic to consider
Users utilizing the keyboard spacebar, page-down keys, or middle-mouse-button auto-scroll.
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