 In the Bangladeshi case, the confirmation messages would have appeared on a paper report; the malware altered the paper reports when they were sent to the printer.In the second case, the bank used a PDF report; the malware altered the PDF viewer to hide the transfers.In May 2016, Banco del Austro (BDA) in Ecuador sued Wells Fargo after Wells Fargo honored $12 million in fund transfer requests that had been placed by thieves.