At present, the behaviors of stealing personal information through the network are not surprising any more. Because computers can gather and sort vast amounta of data, and the Internet can distribute them globally, the concerns sbout privacy online are magnified.
Online users may get "illegal invasions"----passwords or bank accounts stolen,e-mail or telephone number let out---if they do not watch out. Most of the risks come along when they provide personal information to hunt a job or surf the net in public places. But risks also exist even if they are using their own computer at own home.