Abstract: E-commerce (electronic commerce) or EC is the buying and selling of goods and services, or the transmitting of funds or data, over an electronic network, primarily the internet. These business transactions occur either as b to b (business-to-business), b to c (business-to-consumer), c to c (consumer-to-consumer) or c to b (consumer-to-business).It is the trading or in products or services using computer networks like Internet or online social networks. Here the Business conducted through the use of computers, telephones, fax machines, barcode readers, credit cards, automated teller machines (ATM) or other electronic appliances without the exchange of paper-based documents or physically moving to a shopping mall. It includes activities such as procurement, order entry, transaction processing, online payment, authentication, inventory control, order fulfillment, shipment, and customer support. When a buyer pays with a bank card swiped through a magnetic-stripe-reader, he or she is participating in e-commerce. E-commerce Security is a part of the Information Security framework and is specifically applied to the components that affect e-commerce including of Data security and other wider realms of the Information Security framework. E-commerce security is the protection of e-commerce assets from unauthorized access, use, alteration, or destruction. Dimensions of e-commerce security-Integrity, Non-repudiation, Authenticity, Confidentiality, Privacy, Availability. Ecommerce offers the banking industry great opportunity, but also creates a set of new risks and vulnerability such as security threats, hackings. Therefore it is an essential management and technical requirement for any efficient and effective Payment transaction activities over the internet. Due to the constant technological and business change and requires a coordinated match of algorithm and technical solutions. In this paper we discussed with Overview of security for e-commerce, various steps to place an order, Security purpose in E-commerce, various security issues in E-commerce, guidelines for secure online shopping etc.
Keywords: E-commerce, Non-repudiation, Authenticity, Confidentiality, Privacy, Availability.