Research On Privacy Leakage Detection And Protection Of Android System

With the popularity of mobile intelligent terminals,the number of mobile applications has been increasing quickly.Compare with other operating systems,Android is an open-source system.Beside Google Play,users can download applications from many third-party software markets.These markets may ignore the security audit of the applications,which brings many security problems.Malicious codes are inserted into applications.If these applications run,users' privacy will be leaked.They can cause huge losses to users.This paper is based on existing Android security mechanisms,analyze the feature and detection method for privacy leakage,and design a new privacy leakage detection analysis system for Android applications.The system combine dynamic analysis method and static analysis method to detect privacy leakage.The main research work is as follows:1.Summarize the privacy information source and leaking ways of Android platform.Describe the existing application detection methods and the research progress about privacy.2.Introduce the information about architecture?file structure?security mechanisms in Android system.Emphatically analyze how to get applications from Android device.3.Study the technology in dynamic analysis and static analysis.Propose a new scheme to detect Android applications' privacy leakage according to the advantage and disadvantage in existing methods.4.Design a privacy leakage detection system for Android applications.Dynamic analysis conduct a series of improvement design on TaintDroid technonogy,achieve high-coverage?high-efficiency or automation method on demand to collect sensitive data.Static analysis extract the characteristic information on application and associate it to sensitive data,and filter privacy leakage according to risk assessment.This system use GUI to achieve detection operation and feedback the analysis results by report.5.Finish large sample test.Summarize the applications' privacy leakage situation and suggest Android users how to protect their privacy.