In this I have used self organizing maps to detect the potential Cheaters in Bank Credit card system. In this we used Unsupervised Learning Algorithm Self Organizing Maps to detect the potential cheaters in Credit card system to avoid any frauds from happening giving approvals to right set of customers. Dataset Courtesy: I have taken the Dataset from UCI machine Learning Repository: http://archive.ics.uci.edu/ml/datasets/statlog+(australian+credit+approval) I have used MiniSom library created by developer Giuseppe Vettigli to perform SOM on this dataset.: https://testpypi.python.org/pypi/MiniSom/1.0 This code made under the License: CC BY 3.0 which can be shared and used Here is the Github site: https://github.com/JustGlowing/minisom/blob/master/minisom.py