Blank GPU Canvas

Detection approach

Canvas rendering anomaly detected. The browser successfully executed a geometry render request, but the output was 100% empty or completely transparent. This indicates a headless browser attempting to mask the absence of a real GPU.

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 aggressive script blocks, ad-blockers, or privacy extensions blocking canvas.