Chapter 4 Cyber Fraud and Financial Stability Evidence from the United States and South Africa.

Abstract

Cyber fraud has evolved from a low-level nuisance to a systemic threat to financial stability. In the United States, ransomware attacks on payment systems, business email compromise (BEC) draining corporate accounts, and supply chain cyberattacks have prompted the Financial Stability Oversight Council (FSOC) to designate cyber risk as a top systemic vulnerability. In South Africa, cyber fraud is exacerbated by load-shedding (rolling blackouts) that disrupts fraud detection systems, a high incidence of insider collusion, and under-resourced law enforcement. This chapter provides a comparative analysis of how cyber fraud affects financial stability in the US and South Africa, drawing on central bank reports, forensic case studies, and quantitative evidence on contagion, liquidity freezes, and reputational runs. We find that the US faces greater systemic risk from interconnectedness – a single major bank or payment processor outage could cascade. South Africa faces a “chronic fragility” risk – repeated, smaller cyber fraud incidents erode trust in the banking system incrementally, reducing deposit and investment flows. We identify two bridging pathways: (i) cross-border cyber threat intelligence sharing to track fraud proceeds flowing from SA to US; (ii) capacity-building for South African banks to implement US-style real-time fraud containment protocols. The chapter concludes that cyber fraud is no longer a micro-level crime but a macroprudential concern requiring trilateral (US–SA–UK) coordination.