Bluesnarfing is the theft of information through Bluetooth. Hackers do it by sneaking into mobile devices - smartphones, laptops. tablets, or personal digital assistants (PDAs) whose connection has been left open by their owners. It implies exploiting Bluetooth vulnerabilities in order to grab such data as text or email messages, contact lists, and more.
It's easy to become a victim of a bluesnarfing attack if you have a habit of using Bluetooth in public places and your phone is usually in discoverable mode.
Cybercriminals can perform the bluesnarfing attack on a device even when it is 300 feet away. What they can steal by doing so is mindblowing and quite scary. They can practically copy the entire content of your phone or device, including your emails, contact lists, phone number, passwords, and your pictures. Some bluesnarfing attackers use the victim's phone to call long distance, leaving its owner with a huge telephone bill. All these happen without the victim's knowledge, of course, and so attacks can go on for a long time.