Learn how Splunk Enterprise may be used to detect various forms of fraud using the example scenarios in Splunk Security Essentials for Fraud Detection. 
These detection use cases were implemented using the Search Processing Language (SPL) and the Machine Learning Toolkit (MLTK). 
The use cases include example data sets so you may run them yourself. After learning about these examples, you can start to experiment with similar scenarios with your own data using Splunk Enterprise. 

Attention: This application contains a large example data set so some dashboards may be slow to load.