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.

cache file

A file that is used to improve the performance of Microsoft Windows. The cache file is established on the remote computer and is used to hold Windows bitmap data. If the bitmap data is in the cache file when a Windows screen is redrawn, the data does not have to be resent, which results in better performance.

A copy of a file that has been scanned for risks and content violations that is stored on disk by the RPC client. When the RPC client receives a request for a file from a user, it checks its cache for the file. If the file is not found, the client sends the file to Symantec Scan Engine for scanning. When Symantec Scan Engine returns a clean file to the RPC client, the client stores the file in its cache and sends the cached file to the user. The cached file is sent to any subsequent user who requests that file. This process conserves scanning resources.