Bluetooth on mobiles
With the introduction of any new technology, there are always pros and cons. Bluetooth, like any other communication technology, has security concerns. Especially with mobiles being a large component of lives, there is a great deal of sensitive information stored on these devices. Most mobiles are now equipped with Bluetooth, so users need to be aware of the security concerns they raise. Bluesnarfing, an activity involving wrongful access to someone else’s data, is covered in a subsequent article in this series.
On mobiles, it is possible to turn Bluetooth on and off at will. Turning off Bluetooth will effectively rule out any sort of foul play via that media.
There are a few other options as well; the device usually has an option to turn off visibility of the phone. When the phone’s visibility is turned off, other Bluetooth-enabled devices looking for another device will not be able to detect that phone at all, in spite of the Bluetooth being turned on.
Subsequently, there is then the concept of paired devices. Working in conjunction with the visibility factor, it is possible to pair two devices using passkeys. Each user enters the same numeric code, when prompted, on their respective devices. Pairing two devices tells the devices that the other is to be trusted, and there is no need to prompt for authentication every time a file is received. Device visibility then makes sense, as paired devices can communicate.