Internet banking is the use of Internet digital communications technology to Internet as a trading platform and service channels, on-line for the public to provide clearing and credit services, commercial banks or financial institutions, Internet banking has become a new banking model. Internet banking has a low transaction cost, fast and convenient transmission of information without time and space constraints, but there are also a number of Internet banking security risk. This article describes the network of banks in relation to the basic content, but also from information security-related aspect of some research carried out in conjunction with the chart illustrates. To ensure the security of Internet banking transactions, on one hand banks are required to establish strict security measures and procedures, on the other hand, consumers have to master the proper and safe use of Internet banking methods. The article finally made a case study, given the summary. As long as the necessary security protection strategy, a reasonable choice of network security products, online banking will be able to achieve the safety requirements to enable consumers to bring confidence to enjoy the convenience of online banking and efficient service.