Detecting a malicious software on Android
<p>I am developing a security related app in Android. In it I would like that when a user installs the app then it should be able to scan the existing apps in the Android based phone and suggest the user if there exists any malicious software in it. So, can anyone suggest how I should start about my work for the app.</p>

<p>What are all the constraints I should take into consideration?</p>
