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Over the last years, there has been a real revolution of mobile devices, which has effectively translated into the exponential increase in internet access rates on a mobile device as opposed to accessing it on desktop systems. Given the growing importance of smartphones, it is important to assess the privacy and security risks of these devices in order to mitigate them. However, as we know, in modern mobile security architecture, applications represent the most critical elements. In this paper we review common mobile applications flaws involving network communications, data storage, user input handling and also exploring a number of vulnerabilities. While applications provide amazing features and benefits for users, they also represent the main attraction for cyber criminals. In order to have a true picture of the mobile security threat spectrum, this article presents the means of how mobile applications can impact systems security, stability and compromise personal data if they are not handled properly.
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Doctoral dissertation University degli Studi di Napoli Federico II 10.6092/UNINA/FEDOA/3029  di Bernardo, M., Budd, C. J., Champneys, A. R.and Kowalczyk, (2007), Bifurcation and Chaos in Piecewise Smooth Dynamical Systems. Theory and Applications. Springer-Verlag,UK. 10.1007/978-1-84628-708-4 di Bernardo M. Budd C. J. Champneys A. R. Kowalczyk 2007 Bifurcation and Chaos in Piecewise Smooth Dynamical Systems Theory and Applications Springer-Verlag UK 10.1007/978-1-84628-708-4  Cheng, J., & Xu, H. (2006). Nonlinear dynamic characteristics of a vibro-impactsystem
. Behavior of each system where the body collisions take place is different, and therefore, each of them must be investigated in an individual way. Because of the practical importance, a good deal of attention is focused on analysis of vibro-impactsystems, where the vibrations are governed by the momentum transfer and mechanical energy dissipation through the body collisions. This is utilized for impact dampers applied to attenuate high-amplitude oscillations, such as those appearing in subharmonic, self-excited and chaotic vibrations. Problem of the body collisions is
of vibro-impactingsystems embodied by some hybrid systems with impacts.
Particularly, the motion of a material point and its impacts with the moving
limiter are researched. Special consideration is given to periodic events such as
one impact every period, one impact every multiple period and multiple impacts
every one period of motion of the limiter. In all of these occurrences, the
dynamic behaviour of the system and the stability of fixed points is investigated.
Furthermore, specific instances of the chaotic motion are examined and reported