Identify
Perform an EDA to explore key risk factors describing fraud entities/processes.
Refine
Iterate over dubious cases to adopt the model and reduce the false positives ratio. Try to minimize the risk of classifying legitimate entities/processes as fraud.
Implement
Based on the results of steps 1-2, implement a solution to work in a continuous/streaming mode allowing on promotive identification of fraud actors and taking remedies actions against them. As a part of the solution, a proper feedback loop needs to be delivered and included so that the false classifications are feeded to the model in order to improve its quality.