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Trend Micro InterScan Messaging Security Virtual Appliance Administrator’s Guide
Updating Scan Engine and Pattern Files
5-2
To ensure that your network is constantly protected against the latest malware, ensure
that you update IMSVA components such as the scan engine and virus pattern files on a
regular basis. You can choose to perform a manual or scheduled update of the
components.
Table 5-1 provides a list of all IMSVA update components.
TABLE 5-1. IMSVA Update Components
COMPONENT DESCRIPTION
Scan engine The scan engine detects Internet worms, mass-mailers,
Trojans, phishing sites, spyware, network
exploits and viruses in email messages and email
attachments.
Virus pattern The virus pattern contains information that helps
IMSVA identify the latest viruses/malware and mixed
attacks.
Spyware/grayware
pattern file
IntelliTrap pattern
IntelliTrap exceptions
The spyware/grayware pattern file identifies spyware/grayware
in email messages and email attachments.
The IntelliTrap pattern detects real-time compression
files packed as executable files.
The IntelliTrap exceptions pattern contains a list of
"approved" compression files.
Antispam engine The antispam engine detects spam in email messages
and email attachments.
Spam pattern The spam pattern helps IMSVA identify the latest
spam in email messages and email attachments.
URL filtering engine The URL filtering engine facilitates communication
between IMSVA and the Trend Micro URL Filtering
Service. The URL Filtering Service is a system that
rates URLs and provides rating information to IMSVA.