Bluesnarfing is an interesting and very powerful attack that can be employed against vulnerable devices. In a nutshell, Bluesnarfing is the unauthorized access of device through a Bluetooth connection, often between phones, laptops, and similar types of devices. This attack provides access to various types of data and resources on the target, and on some phones users can copy pictures and private videos.
This type of attack targets any Bluetooth capable device that has its connection turned on and is discoverable by a scanning party. Turning off Bluetooth as well as keeping a device from being discoverable is a workaround for this problem.
For a device to be targeted, the attacker must guess the device's MAC address via a brute force attack. As is normal with brute force attacks, guessing the right MAC address is only a matter of time.