Instant payments systems are proliferating rapidly, and many central banks are working hard on interlinking them to enable quick, efficient cross-border payments. However, while IPS can provide extremely rapid, low-cost payments, they are not immune to fraud and erroneous payments. Given the speed of settlement, these problems can be even more difficult to resolve than they are for other payments systems.   Petia Niederländer, head of payments, risk monitoring and financial literacy at Oesterreichische Nationalbank, and Cian OMurhu, managing director and head of strategic transformation office at Swift, join Lewis McLellan, editor of OMFIF’s Digital Monetary Institute, to discuss the technical infrastructure required to address these issues, how they are being implemented and what work still needs to be done.