RAM Limit Cluster

Detection approach

jsHeapSizeLimit Entropy Cluster: jsHeapSizeLimit is exactly 2GB or 4GB, but the User-Agent claims to be a high-end 64-bit Mac. This power-of-two memory ceiling is a signature of sandboxed virtual containers or Docker-based bot farms.

How this helps detect bots

This signal is assessed with other independent session, browser, and network evidence. A single anomaly is a lead, not a verdict; corroborating anomalies make automated traffic more likely.

Legitimate traffic to consider

Users running memory-restricted enterprise browsers or low-end Chromebooks.