EFF's IMSI-catcher / cell-site-simulator detector. Runs as firmware on a cheap Qualcomm-based mobile hotspot (Orbic RC400L, TP-Link M7350) and passively analyses the LTE control plane from the modem's /dev/diag feed, raising an alert on cell-site-simulator behaviour — unexpected identity/IMSI requests, downgrade attempts or suspicious tower configuration. The portable, low-cost blue-team counterpart to Crocodile Hunter for confirming whether a rogue station is present, with no SDR or host PC.