Another potential attack could begin with a phone that sends an MMS to other phones with an attachment, because this attachment is infected with a virus; for example, the virus Commwarrior uses the address book and sends MMS messages including an infected file to recipients.
There is a real-world example of this attack: the virus Commwarrior uses the address book and sends MMS messages including an infected file to recipients. Another potential attack could begin with a phone that sends an MMS to other phones, with an attachment. This attachment is infected with a virus. 
