The glossary below contains many of the terms you will find in common use throughout the Symantec Security Response website. Please refer to this list to find definitions of terms and answers to other Internet security-related questions.


A web of different, intercommunicating networks funded by both commercial and government organizations. It connects networks in many countries. No one owns or runs the Internet. There are thousands of enterprise networks connected to the Internet, and there are millions of users, with thousands more joining every day.