Expense fraud is nothing new. Finance directors and accounts payable managers have always known that a small proportion of expense claims are not entirely what they appear. A meal slightly inflated here, a personal journey submitted as a business trip there - all things that can be picked up relatively easily by the various instances of employee expense management software that exist for business use.

But something has changed, and the nature of the threat has shifted so quickly that the manual controls most finance teams rely on are no longer fit for purpose.