How to protect the phone from attacks?

Hi there,
I just found an interesting and dangerous tool:
http://www.getjar.com/products/15782/MagicBlueHack
It says you can make free calls and send free SMS just by connecting to any other Bluetooth enabled mobile phone, the other phone even does not need to install this software...
How can one protect his phone from such attacks besides turning off Bluetooth?

Exactly. Your best line of defence is common sense.
Firstly, don't leave bluetooth on unless you need to use it.
When you do need it, don't leave your phone as discoverable. Leave it as "hidden". You only need it to be discoverable if trying to pair another device with it.
If a pairing request comes in while the phone is discoverable, ask yourself if you were responsible for it. If in doubt, don't accept the request.
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