Learning Objectives $5\mathrm{.}1$ Understand the scope of e$-$commerce crime and security problems, the key dimensions of e$-$commerce security, and the tension between security and other values. $5\mathrm{.}2$ Identify the key security threats in the e$-$commerce environment. $5\mathrm{.}3$ Describe how technology helps secure Internet communications channels and protect networks, servers, and clients. $5\mathrm{.}4$ Appreciate the importance of policies, procedures, and laws in creating security. $5\mathrm{.}5$ Identify the major e$-$commerce payment systems in use today.