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.


The process of dividing a file into segments, comparing each segment with the previously stored file segments, and then storing only the unique segments. Deduplication significantly reduces the amount of data that is stored because redundant data is replaced with a pointer to the unique data copy.