MILLIONS of people with email accounts have undoubtedly encountered fraudulent emails that originate from Nigeria. Online fraudsters from the huge west African nation are also known as Yahoo Boys. According to data from the Federal Bureau of Investigation analysed in academic research, they have defrauded millions of victims worldwide. Statistics about the actual value of Yahoo Boys’ scams do not exist. But the wider cost of scams in general in the UK alone has been estimated at £9.3 billion. Authors SULEMAN LAZARUS, Visiting Fellow, London School of Economics and Political Science MARK BUTTON, Professor of Security and Fraud, University of…