Internet security is a broad term that refers to the various steps individuals and companies take to protect computers or computer networks that are connected to the Internet. One of the basic truths behind Internet security is that the Internet itself is not a secure environment. The Internet was originally conceived as an open, loosely linked computer network that would facilitate the free exchange of ideas and information. Data sent over the Internet—from personal e-mail messages to online shopping orders—travel through an ever-changing series of computers and network links. As a result, unscrupulous hackers and scam artists have ample opportunities to intercept and change the information