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173.21.3.14 has a threat confidence score of 99%. This IP address from United States (AS30036, Mediacom Communications Corp) has been observed in 64 honeypot sessions targeting TELNET protocols. Detected attack patterns include telnet busybox shell activation with capability check. First observed on March 24, 2026, most recently active March 26, 2026.
Identifies a Telnet session where BusyBox is leveraged to activate or access a shell environment (sh, shell, system, linuxshell, enable) followed by command capability validation (ping). This pattern reflects deliberate shell breakout and execution-context validation commonly observed in IoT botnets and embedded Linux compromise workflows. The presence of multiple shell invocation variants combined with BusyBox applet usage indicates adaptive execution logic rather than incidental command usage.