1. Help Net Security: Financial services firms most adept at making balanced security investments—Help Net Security, 2020 [Online]. https://www.helpnetsecurity.com/2018/02/14/financial-services-security-investments
2. Statistica: Leading Android App Categories Worldwide 2019, 2020 [Online]. https://www.statista.com/statistics/200855/favourite-smartphone-app-categories-by-share-of-smartphone-users/
3. Securitymagazine.com, 2020 [Online]. https://www.securitymagazine.com/articles/91660-more-than-99-billion-malware-attacks-recorded-in-2019
4. Marouf, A.A., Ajwad, R., Tanbin Rahid Kyser, M.: Community recommendation approach for social networking sites based on mining rules. In: 2nd IEEE International Conference on Electrical and Information and Communication Technology (iCEEiCT), Jahangirnagar University, Bangladesh, 21–23 June, 2015
5. Mehedi Hasan, M., Shaon, N.H., Marouf, A.A., Kamrul Hasan, M., Mahmud, H., Mohiuddin Khan, M.: Friend recommendation framework for social networking sites using user’s online behavior. In: 18th IEEE International Conference on Computer and Information Technology (ICCIT), MIST, Bangladesh, 21–23 December, 2015