Plugin Spoofing

Detection approach

navigator.plugins / MimeTypeArray prototype spoofing detected. puppeteer-extra-plugin-stealth's magicArray.js creates Proxy-wrapped fake PluginArray objects that fail consistency checks (enabledPlugin circular reference, item() overflow behavior, or prototype mismatch).

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

Niche browsers or legacy browser plugins modifying their navigator profiles.