Interesting article where apparently it was found how to hack into a fitbit via bluetooth, and use that to piggyback maleware onto the machine when the fitbit sunk with it. Its a bit of a tails case backdoor. What are the odds of you having a fitbit, being in bluetooth range and syning it to your PC at a given time for the attacker to insert a payload? Obviously if someone is going thru all that you are a target for someone and not some random drive by cracker.
http://www.ubergizmo.com/2015/10/fitbit-trackers-hacked-10-seconds/?utm_source=mainrss