The Internet is a global network that connects computers and individual networks
together. It can be used by anybody who has access to an Internet portal or an Internet service provider (ISP). In this environment, you should have a low level of trust in the people who use the Internet. You must always assume that the people visiting your website may have bad intentions; they may want to buy your product, hire your firm, or bring your servers to a screaming halt. Externally, you have no way of knowing until you monitor their actions. Because the Internet involves such a high level of anonymity, you must always safeguard your data with the utmost precautions.
Figure 1.10 illustrates an Internet network and its connections.
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