Speech Synthesis

Detection approach

Empty Text-to-Speech voices array: speechSynthesis.getVoices() returned 0 voices on desktop, proving the absence of OS-level speech synthesis voice packages common on Linux/Docker scraping servers.

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

Legitimate users browsing on Linux platforms that lack any installed system text-to-speech voice packs.