Bluetooth worm "is a real threat"
Because of its slow propagation and relatively minor damage potential, the world's Bluetooth Symbian phone users have failed to panic much over Cabir - but there are now new versions. And one uses MMS. According to F-Secure, Mabir is a worm that operates on Symbian Series 60 devices, and is capable of spreading both over Bluetooth and MMS messages." The threat is still limited to "users too stupid to stay out of a trap." Like Cabir - which is still active in the wild - Mabir sends an application named Caribe to the phone - but the user has to press a button saying "Yes, install Caribe" before it can run. But where Cabir needed to find a Bluetooth phone in "discoverable" mode, Mabir can run over MMS messages.