We are a highly technical society. Our everyday lives revolve around the Internet: we benefit from the Internet, but we can also be victims of cyber criminals. To understand how criminals use the Internet to their advantage, one must understand how we communicate on the Internet. In this paper, you are required to describe in detail how we communicate on the Internet, based upon your readings. Discuss the major networking building blocks and their functions. Secondly, discuss software applications' vulnerabilities, such as those found in web browsers.