Today’s advanced mobile devices are well integrated with the Internet and have far more functionality than mobile phones of the past. They are increasingly used in the same way as personal computers (PCs), potentially making them susceptible to similar threats affecting PCs connected to the Internet. Since mobile devices can contain vast amounts of sensitive and personal information, they are attractive targets that provide unique opportunities for criminals intent on exploiting them. Both individuals and society as a whole can suffer serious consequences if these devices are compromised. This paper introduces emerging threats likely to have a significant impact on mobile devices and their users.