How secure is your Bluetooth enabled whatchamacallit? Good question eh? That Bluetooth phone has lots of stuff in it, so does your PDA, laptop, all kindsa stuff.
The answer, unfortunately, is not very. Nope, not at all really.
The above links are to an article that describes how some kids built a Bluetooth "sniper rifle" style sniffer that can detect, and fiddle with, Bluetooth devices at a mile or more away. The guts of it is a large antenna (which one could make pretty quick out of a wok) and a Gumstix computer the size of a pack of, you guessed it, gum. Stir in some solder and a bit of time and shazam! you've got a big ear on the world. Did I mention these are kids?
We've been aware for quite a while now that Big Brother is listening and watching ever closer. There's nothing the government can't crack or find out about on line, given time. If its on a computer, its theirs. Big Brother sees all.
This thing here is different. This is what I'm going to call Little Brother. Big Brother's annoying younger sibling. Little Brother is getting pretty sneaky these days, so just take care what you put on your wireless devices.