Virus on mobile phones?

Does anybody know how security (i.e. virusprotection) will be handled when j2me is integrated on mobile phones?

Siemens has its SL45i and with its own extensions gives access to a couple of functions of the device itself (phonebook, SMS sending etc.). How can it be avoided that new viruses will come up which for instance send SMS-messages to everybody in your phonebook (and as SMS-messages can push an application, can basically spread themselves through this mechanism).

[494 byte] By [michiel_visser] at [2007-9-26 6:03:41]