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
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
Web developers or QA testers utilizing responsive design modes in desktop browsers.
Need a complete bot protection layer?
BotRefund helps website owners identify suspicious visits, protect conversion data, and build evidence for invalid-click reviews.
Explore BotRefund — best bot protection for your website