。Mobile users know the security risk when a downloaded app is installed on their phones monitor the run-time operations during the apps are running ·Trusted Developer make secure enough apps,such as internet banking apps no vulnerability could be exploited by attackers to bring serious damage• Mobile users – know the security risk when a downloaded app is installed on their phones – monitor the run-time operations during the apps are running • Trusted Developer – make secure enough apps, such as internet banking apps – no vulnerability could be exploited by attackers to bring serious damage