The tools and products of the information age do not exist in a world by themselves. As we said in Chapter 1, a computer system consists not only of software, hardware, data, and procedures, but also of people. Because of people, computer systems may be used for both good and bad purposes.

There are more than 300 million microcomputers in use today. What are the consequences of the widespread presence of this technology? Does technology make it easy for others to invade our personal privacy? When we apply for a loan or for a driver’s license, or when we check out at the supermarket, is that information about us being distributed and used without our permission? When we use the Web, is information about us being collected and shared with others?

Does technology make it easy for others to invade the security of business organizations like our banks or our employers? What about health risks to people who use computers? What about the environment? Do computers pose a threat to our ecology?

This technology prompts lots of questions—very important questions. Perhaps these are some of the most important questions for the 21st century. Competent end users need to be aware of the potential impact of technology on people and how to protect themselves on the Web. They need to be sensitive to and knowledgeable about personal privacy, organizational security, ergonomics, and the environmental impact of technology.