Detection approach
navigator.hardwareConcurrency reports 0 or >128 cores. Values in this range are impossible on consumer hardware and indicate an emulated environment, server farm, or tampered navigator object.
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 running high-end multi-socket servers, server host environments, or developer rigs.
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