CSS Media Query

Detection approach

CSS Media Query Variable Resolution Mismatch detected. Programmatic screen dimensions (screen.width) exposed via JS did not match actual hardware-level CSS media query compilation rules. Spoofer extensions mock JavaScript property values but fail to intercept CSS-level media queries, leaking the device's actual dimensions.

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

Web developers or QA testers utilizing responsive design modes in desktop browsers.