1. ICASA: The state of the ICT sector in South Africa. Independent Communications Authority of South Africa, p. 115, March 2021
2. StatsSA: Statistical release P0302: mid-year population estimates 2020, pp. 1–22. Stats SA, July 2020
3. Casey, E., Turnbull, B.: Digital evidence on mobile devices. Digit. Evid. Comput. Crime 3, 1–44 (2011)
4. KPMG: Global profiles of the fraudster, pp. 1–27. KPMG, May 2016
5. Ogundile, O.O.: Fraud analysis in Nigeria’ s mobile telecommunication industry. Int. J. Sci. Res. Publ. 3(2), 1–4 (2013)