] But experiments, one using a common laptop and another
] using a prototype Bluetooth "rifle" that captured data
] from a mobile phone a mile away, have demonstrated that
] such attacks aren't so far-fetched.
]
] Then, German researcher Herfurt developed a program
] called Bluebug that could turn certain mobile phones into
] a bug to transmit conversations in the vicinity of the
] device to an attacker's phone

Wired News: Security Cavities Ail Bluetooth