Security involves prevention, detection, response, monitoring and review measures to reduce perceived risks to acceptable levels. Understanding corporate security is about understanding what the key assets in the company are. Today, the key asset is often information. But information alone is not enough, knowledge of how to use valuable information is needed to provide a competitive edge. The value of information may depend on being secret and accurate.
Information can take many forms, hence methods of securing information are various.
The different beween Internet and Intranet may not be obvious to end users. With this abstraction comes also a certain loss of accountability and responsibility. Each of these domains contains interfaces to the outside world. This may look overwhelming at first, lets look at the domains one by one. The Buzzwords are explained at the end of the article if they are new to you - don't worry, they're just networking technologies.