Survey on Privacy Protection of Android Devices

Nowadays, the ubiquity of smart phones make them carry large amounts of personal sensitive information, but at the same time, there are also many Apps in Android APP market that target to collect users´ sensitive data. So it becomes quite important to prevent users from the threat of privacy leakage. In this paper, we analyze the Android´s privacy protection mechanism, and describe various threats to users´ different types of privacy data. After that, we enumerate two ways that can leak sensitive information, and discuss the current solutions and techniques from aspects of privacy protection enhancement and privacy leakage detection. We also make a fine-grained classification for these two aspects, and study the difference between solutions in each category. Finally, we summarize the deficiency of existing research of Android privacy protection and propose the future research direction.