CHAPTER 14
E-Mail and Instant Messaging
In this chapter, you will
- Learn about security issues associated with e-mail
- Understand some of the security practices for e-mail
- Learn about the security issues of instant messaging protocols
E-mail is the most popular application on the Internet. It is also by far the most popular application on intracompany networks. Roughly 12 million e-mails were sent each day in 2001, meaning that about 4.38 billion e-mails were sent in that year. In 2000, 569 million e-mail inboxes existed in the world. A Pew report from 2007 states that 91 percent of U.S. Internet users use e-mail. Several sources indicate that in 2007, more than a billion active e-mail accounts sent more than 150 billion e-mail messages every ...
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