Scila AB is a leading software company in providing market surveillance, AML and risk management tools to the financial and energy sector. Among them are clients dealing with crypto currencies like the digital asset trading platforms Archax and D2X, as well as other larger crypto currency exchanges and brokers. In this article Mikael Ohlsson, software developer at Scila AB, gives a brief introduction to the different types of trading on decentralised exchanges and thoughts on what needs to be improved to provide additional trust and confidence in the DeFi space through market surveillance.