Nokia is conceding that some of its Bluetooth-enabled cellphones have a security hole in which its possible for someone to wirelessly read or copy a person’s address book and calendar:
[T]he spokesperson said the attack was only possible if the phone was in ‘visible mode’ where it is set to actively search for other Bluetooth devices. The company admitted that a bluesnarf attack “may happen in public places, if a device is in the ‘visible’ mode, and the Bluetooth functionality is switched on. The phones vulnerable to ‘snarf’ attack include the Nokia 6310, 6310i, 8910 and 8910i phones as well as devices from another manufacturer.
Read [Thanks, Mike]