The Design And Implementation Of Bank Credit Card Anti-fraud System

By the end of 2014, the number of credit cards issued had exceeded 400,000,000 in China. There are more than 298,000 merchants that accept credit cards now. The numbers of ATM machines and POS machines are up to 64,000 and 476,000 respectively. Domestic institutions which are authorized to issue credit cards have reached to 125. With the concept of credit consumption, the credit card risk is also increasingly prominent. Especially during the time that the economy is sliding into its worst downturn, China has been in a risky period of multiple, high credit card fraud.Recently, there are an increasing number of cases like getting cash out because of the credit card preauthorization fraud happening every day. The risk of multiple, high credit card fraud in the banking management is bigger and bigger. Application fraud and using fraud are two kinds of credit card fraud and application fraud is more frequent, which is because, in the process of applying, there is no need for the applicant to apply it in person. And there are plenty of transactions had to deal with and no collateral needed, application fraud happens very often. As for those issuing users, banks failed to supervise them regularly and strictly. They can not have a clear picture about how their users use the credit card, therefore, using fraud of credit card such as stealing card and cashing out is everywhere.Contrast with some world-class storage institutions, most domestic commercial storage institutions are still in an initial step of risk-based regulation, and the definition, the principle, the framework of managements and supervisions are still not complete. It is the same to their other parts of work. The defects of present system offer a big contrast against the current types of fraud. Therefore, we have to face plenty of challenges speaking of the related control of device model, business operation, the system platform and anti-fraud technology and so on.This paper introduces the concept and classification of the credit card risk, as well as the importance of fraud risk, studies the current situation of the anti-fraud research both at home and abroad and analyzes how the anti-fraud system is implemented in domestic commercial banks and what obstacles may meet. Under the background of credit card fraud, this paper also introduces the workflow of the bank credit card audit, the anti-fraud technology, as well as the demands and function analysis of the system. The paper equally puts forward an anti-fraud system model which is accordant to the current situation of the anti-fraud. The core processing technology in this paper is Chinese fuzzy matching algorithm. Combined with big data, the data flow engine class technology, rules of inference engine technology and the decision tree engine technology, huge amounts of data can be realized with the flexible operation processing and matching, and for the existing system in banks, there is no need for them to be advanced. Therefore, whether considering the cost of the management and maintenance, it is suitable for domestic commercial banks. At the end of the paper, we come to conclude the results of the study and put forward the direction of the development in the future.