1. Number of Mobile Phone Users Worldwide from 2016 to 2023 (In Billions). Available online: https://www.statista.com/statistics/330695/number-of-smartphone-users-worldwide/ (accessed on 19 May 2021).
2. Mobile Operating System Market Share Worldwide. Available online: https://gs.statcounter.com/os-market-share/mobile/worldwide/ (accessed on 19 May 2021).
3. Number of Android Applications on the Google Play Store. Available online: https://www.appbrain.com/stats/number-of-android-apps/ (accessed on 19 May 2021).
4. Gibert, D.; Mateu, C.; Planes, J. The rise of machine learning for detection and classification of malware: Research developments, trends and challenges. J. Netw. Comput. Appl. 2020, 153, 102526. [Google Scholar] [CrossRef]
5. Khan, J.; Shahzad, S. Android Architecture and Related Security Risks. Asian J. Technol. Manag. Res. [ISSN: 2249–0892] 2015, 5, 14–18. Available online: http://www.ajtmr.com/papers/Vol5Issue2/Vol5Iss2_P4.pdf (accessed on 19 May 2021).