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.

zombie system

A computer that is known to be infected with a worm or other malicious code and that has been observed attacking at least two distinct users. Zombie systems tend to be easily exploitable, poorly protected, and poorly administered. They can be used as initial infection points, significantly heightening the initial speed and impact of a worm.