A security researcher has developed a method by which one can exploit a vulnerability in FitBit fitness trackers and subsequently deliver malware to the target device in 10 seconds.

Axelle Apvrille (@cryptax), a malware researcher at network security firm Fortinet, has found that FitBit wearables are open on their Bluetooth ports, a property which could enable an attacker to connect a device from within a few meters away and deliver malware to the bracelet.