← All bot detection signals

1. Network, VPN, & Geolocation Evading Vectors

Netprobe Telemetry Missing

Detection approach

Netprobe telemetry is missing despite out-of-band DNS verification. The HTTPS probe connection on port 8443 failed or was suppressed/blocked, suggesting connection-layer shielding or blocking filters.

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

Users behind strict corporate or educational firewalls that block outgoing traffic on non-standard ports (e.g. 8443).

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