Context-based monitor framework for sensors access in smartphone

Smartphone have more and more sensors which have given a wealth of experiences to users. In Android system, once one application is granted permissions to access sensors, its behavior is not monitored any more. Some malicious applications make use of this vulnerability to steal privacy. For example, a malicious program named “Eavesdropping thieves” can obtain the microphone access permission to open the microphone covertly to record users´ calls and transmits them to hackers´ mailboxes. Existed methods are not acceptable to solve this privacy leakage threat very well. A monitor framework for sensors access in smartphone has been proposed. The framework monitors applications accessing sensors and adjusts the applications´ access capabilities according to the context automatically. The prototype has showed that the framework can prevent privacy leakage through sensors and achieve better security in smartphone.