An e-commerce system consists of a collection of sophisticated components such as product databases, content management (CMS), and customer registration and administration, which are a natural part of the standard shop systems (administration features). Other than the pure requirements of the administration processes from the shop owners' standpoint, the needs and demands of customers also come to the forefront. Hence, the functionality around the customer account management is enhanced due to the optimization of various functions. From the standpoint of customers, the requirements of privacy and security have risen sharply (Langer, pp. 23-37). The current development of e-commerce systems mainly ...