Correlation between Android Permission and Personal Information Security : Cross-sectional analysis

Android is a multi-processing operating system. In the system, the applications run in their own processes. The security between the system and the applications is compulsively realized by the LINUX’s facilities in the process level. The refining security features are through the mechanism of "Permission" to the operation of the specific processes for specific restrictions. In general, the applications are not allowed to access to each other. However, Android has provided a mechanism of “permission” making it possible for applications to access to the activities and data. The key idea of Android’s security mechanism is that applications cannot execute any operation that may have a negative impact on applications, users or system by default. An application is a safety “sandbox” which cannot disturb other applications unless the application has requested the “permissions” to get the extra abilities that basic “sandbox” does not have. The “permissions” requested by the applications can deal with specific kinds of operations such as permitted automatically or forbidding the “permission” by users. The “permissions” which the applications need are written statically in the manifest file in the application files. The “permissions” will be shown when the applications are being installed.