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https://www.statista.com/statistics/281106/number-of-android-app-downloads-from-google-play/
2. Would You Mind Forking This Process? A Denial of Service Attack on Android (and Some Countermeasures);Armando,2012
3. Protecting data on android platform against privilege escalation attack
4. Breaking into the Keystore: A Practical Forgery Attack against Android Keystore;Sabt,2016
5. Privilege Escalation Attacks on Android;Davi,2010