International Association of Computer Science & Information Technology (IACSIT)
Android, Google open source operating system for mobile devices, has been rapidly grown. Android applications (apps) are uploaded to not only official market, play store, but also other alternative markets. These markets have no inspection system for detecting malicious apps. So, malicious apps can be easily uploaded on the market. Many studies have presented to detect malicious apps for the secure Android mobile environment. But without user participation, it is difficult to detect all of malicious apps. The authors present a Warning System for detecting malicious applications on Android system. The warning system monitors API calls related suspicious behaviors running on the service layer.