Fraudsters are targetting fast-delivery services a because they know the majority of businesses have very poor strategies in place to manage fraud in a hurry. Relying on the PSP fraud checks plus some manual checks will either be ineffective, expensive or in many cases both. Wolf + Badger's investment in Sift is the right approach. For a similar vendor in the UK I would recommend Ravelin (whom I work for) - who specialise in preventing fraud at fast-fulfilment businesses like taxi apps and food delivery. The strategies we take and technologies we use are similar to Amazon or Apple; and will allow retailers to take orders in fast-delivery channels with confidence.