Cisco Cisco Web Security Appliance S390 Guida Utente

The IronPort Dynamic Vectoring and Streaming (DVS) engine inspects web 
traffic to provide protection against the widest variety of web-based malware 
ranging from commercially invasive adware applications, to malicious trojans, 
system monitors, and phishing attacks. 

To configure the DVS engine, and Webroot, McAfee, and Sophos global settings, 
see 

.

The IronPort DVS engine can use one or more scanning engines to determine 
malware risk. Depending on the features purchased with the appliance, you can 
enable any of the following scanning engines:

Webroot. Webroot’s automated spyware detection system rapidly identifies 
existing and new spyware threats on the Internet by intelligently scanning 
millions of sites on a daily basis. Webroot uses a signature database to help 
detect threats on the Internet. For more information about the Webroot 
scanning engine, see 

McAfee. The McAfee scanning engine can detect existing and new malware 
threats by using a signature database of malware information and heuristic 
analysis. For more information about the McAfee scanning engine, see 

Sophos. The Sophos scanning engine detects existing and new malware 
threats using a signature database. For more information about the Sophos 
scanning engine, see 

.

Virus

A virus is a program or piece of code that is loaded onto 
your computer without your knowledge and runs against 
your wishes.

Worm

A worm is program or algorithm that replicates itself over 
a computer network and usually performs malicious 
actions.