The use of e-commerce has been associated with a lot of skepticism and apprehension due to some crimes associated with e-commerce and specifically to payment systems. The secure socket layer (SSL) protocol is trusted in this regard to secure transactions for sensitive applications like e-commerce. Unfortunately, the use of SSL protocol causes slow response time on the server which is a major ca...

Fraud is the unlawful acquisition of valuable assets gained via intended misrepresentation. It a crime committed by either an internal/external user, and associated with acts theft, embezzlement, larceny. The proliferation credit cards to aid financial inclusiveness has its usefulness alongside it attracting malicious attacks for gains. Attempts classify fraudulent card transactions have yielde...

Most of us who have purchased items via the Internet have felt reluctant about the transaction at some point — usually when entering our credit card number or receiving unexpected goods. As customers, we need guarantees that the other party will not misuse confidential information, and merchants need guarantees that they will receive payment for the goods delivered. While security protocols suc...

Decentralized path-based transaction (PBT) networks maintain local payment channels between participants. Pairs of users leverage these channels to settle payments via a path of intermediaries without the need to record all transactions in a global blockchain. PBT networks such as Bitcoin’s Lightning Network and Ethereum’s Raiden Network are the most prominent examples of this emergent area of ...

I study the consumption responses of heterogeneous households following changes in both house prices and interest rates. I show the common assumption that household period utility is separable in housing and consumption can be consistent with the observed co-movement between these two series only in the absence of housing transaction costs. When these costs are introduced into dynamic stochasti...

Zipf-like distributions characterize a wide set of phenomena in physics, biology, economics and social sciences. In human activities, Zipf-laws describe for example the frequency of words appearance in a text or the purchases types in shopping patterns. In the latter, the uneven distribution of transaction types is bound with the temporal sequences of purchases of individual choices. In this wo...

While online shopping are becoming more accepted by people in modern life, cardholders are more concerned about card fraud and the lack of cardholder authentication in the current online credit card payment. This paper proposes a purchase protocol with live cardholder authentication for online transaction which combines telephone banking and online banking together. The order information and pa...

As online businesses keep growing and Web services become pervasive, there is an increasing demand for micropayment protocols that facilitate microcommerce, namely selling content and services for small amounts of money (possibly less than one cent per transaction), which cannot be handled efficiently by credit cards due to substantial per transaction fee and delay. In this paper, we investigat...

Firstly this paper gives an introduction to the current C2C e-commerce transactions in China and gives a review of relevant theories and research. Then, we proposed a new method that AHP and fuzzy comprehensive evaluation method of combining, and discuss the methods used in this risk assessment of the feasibility of e-commerce transactions. Finally, an instance of the application of this method...

Capital allocation for credit portfolios has two meanings. First, at portfolio level it means to determine capital as a buffer against an unexpected negative cash-flow resulting from credit losses. In this case, the allocation method can be specified by means of a risk measure. Its result is called economic capital of the portfolio. Second, at sub-portfolio or transaction level, capital allocat...