Discovering Bluetooth Devices :-
Before any two bluetooth enabled devices can start communicating with one another, they must carry out a procedure known as discovery. It can be carried out by scanning for other active devices within the range.

Hacking Bluetooth Devices :-
There are a variety of different types of bluetooth related threats and attacks that can be executed against unsuspecting mobile phone users. Following are some of the most common types of threats :-

1) BluePrinting Attack :- Information gathering is the first step in the quest to break into target system. Even BlueTooth devices can be fingerprinted or probed for information gathering using the technique known as BluePrinting. Using this one can determine manufacturer, model, version, etc. for target bluetooth enabled device.

2) BlueJack Attack :- Bluejacking is the process of sending an anonymous message from a bluetooth enabled phone to another, within a particular range without knowing the exact source of the recieved message to the recepient.


3) BlueSnarf Attack :- Bluesnarfing is the process of connecting vulnerable mobile phones through bluetooth, without knowing the victim. It involves OBEX protocol by which an attacker can forcibly push/pull sensitive data in/out of the victim's mobile phone, hence also known as OBEX pull attack.
This attack requires J2ME enabled mobile phones as the attacker tool. With J2ME enabled phone, just by using bluesnarfing tools like Blooover, Redsnarf, Bluesnarf, etc. an attacker can break into target mobile phone for stealing sensitive data such as address book, photos, mp3, videos, SMS, ......!