Electronic commerce, or e-commerce, is a financial transaction over a network for a good or service. Usually, this occurs over the Internet. Electronic commerce is divided into two areas: business-to-consumer and business-to-business. Business-to-business is the selling of products and services between companies and "the automation of systems via integration" (Korper & Ellis 6). This type makes up a bigger portion of e-commerce (Kilmer 172). Business-to-business e-commerce usually involves stores, manufacturers, suppliers, distributors, and others; it can also take the form of a virtual mall (Korper & Ellis 7). Business-to-consumer interactions and transactions occur between a firm and its customers. Unlike business-to-business, the focus of business-to-consumer is on selling the goods and services and marketing to customers. Companies that are successful in this area of e-commerce search for new and clever ways to sell products and services on the Internet (Korper & Ellis 10-11). E-commerce is now becoming a large business; as a result, fraud and shopping security are becoming problems. Illegitimate e-businesses do affect the reputation of credible e-commerce sites and the public's perception to a certain point, but there are many steps that can be taken to ensure consumers' shopping security online.