Font OS Mismatch

Detection approach

Font-to-OS cross-check failed. The User-Agent claims to be a Windows machine, but exclusive Windows fonts (Segoe UI) are completely missing, and exclusive Linux fonts (Bitstream Vera Sans) were detected natively. This mathematically proves the OS is spoofed and traffic is originating from a Linux server.

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

Linux users spoofing Windows User-Agents, or systems running secure local virtual machines.