Network support services are increasingly being implemented by businesses, large and small, in the face of the growing number and variety of Internet threats. Today, nearly all firms are connected to the Internet at least to some extent, and thus are exposed to risks that simply did not exist even a few years ago. However, many business owners or managers are ignorant both of the full range of cyber-threats, and also of the various ways in which these threats could be countered. This is particularly the case in the area of computer network security.