Glossary

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.

Man-in-the-middle attack

An attack in which an attacker is able to read, insert, and modify messages between two users or systems. The attacker must be able to observe and intercept messages between the two victims.