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 query that identifies a dynamic group of resources that share common criteria.

A program or section of code that is designed to examine each input or output request for certain qualifying criteria and then process or forward it accordingly.

Consists of a set of criteria that determine what messages will be allowed to pass. Brightmail Anti-Spam uses both filters provided by Brightmail and filters provided by customers. Anti-Spam Filters and Anti-Virus Filters are sent from the BLOC. Content Filters, the Allowed Senders List and the Blocked Senders List are provided by customers.

Anti-spam filters are created by the BLOC on the basis of information gathered from the Probe Network. These filters use Brightmails state-of-the-art technologies and strategies to filter and classify email as it enters a site. The BLOC then transmits them to all Brightmail servers.

Anti-virus filters combine Brightmail processing technology with Symantec Anti-Virus definitions and engines to clean viruses from email. The BLOC transmits them to all Brightmail Servers. Anti-virus filtering is separately licensed.

Content filters are written by customers to supplement Anti-spam filters with filters tailored specifically to the needs of the organization.

Allowed Senders List, Blocked Senders List: These lists filter messages based on the sender. Organizations can create their own lists and subscribe to third-party lists.

A method for analyzing files, messages, or Web content.

In CommandCentral Storage, a feature in tables and in the Topology Map with which a user can limit the number and types of objects displayed. Also, a way in which an administrator can limit the amount of data collected by the Exchange explorer during an Exchange scan.