International Science Congress Association (ISCA)
Android has the biggest market share among all Smartphone operating system. Security is one of the main concerns for Smartphone users today. As the power and features of Smartphone's increase, so has their vulnerability for attacks by viruses, etc. Perhaps android is more secured operating system than any other Smartphone operating system today. Android has very few restrictions for developer, increases the security risk for end users. In this paper, the authors have reviewed android security model, application level security and security issues in the android based Smartphone.