Information traveling on the Internet usually takes a circuitous route to its destination computer, through several intermediary computers. The actual route is not under your control. As your information travels, each intermediary computer presents the risk that someone will eavesdrop and make copies. An intermediary computer could even deceive you and exchange information with you by misrepresenting itself as your intended destination. These possibilities make the transfer of confidential information, such as passwords or credit card numbers, susceptible to abuse. This is where Internet security comes in, and why it is a concern for everyone who uses the Net.
NetLingo Classification: Technical Terms