Many organizations disregard the security of Bluetooth networks as a concern because they consider Bluetooth to be a short-range technology. But Bluetooth Class 1 devices are capable of transmitting at 100mW, which have a standard range of approximately 100 meters.
This is comparable to that of an 802.11b WLAN device. Guess where you'll find many of such Class 1 Bluetooth devices?
Yep, are you leaving your laptop and desktop systems wide open to attack?
On another note, while everyone's thinking of Wi-Fi and RC, maybe Bluetooth is a viable way to control a robot wireless too ... after we harden it though.