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As Smartphone becomes popular and the processing power is catching up with PC, although it brings much convenience to people's daily life from fast access to latest information to efficient financial activities, more potential security threatens needs to be solved. As the mobile operation systems in different devices become common like Symbian and Windows Mobile, it is more possible for fast virus propagation and large scale damage soon. There have been several attacks targeting Smartphone till now and it is a trend that hackers may move the battlefield from PCs to smart phones because of promising profit and smart phones' limitations for antivirus work. This paper will present several security issues, predict possible attack forms and give some defense suggestions for Smartphone security protection.
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