To ensure up-to-date protection against the latest risks, there are several pattern
files
components you can update. These files contain the binary
signaturesor patterns of known security risks. Cloud Edge uses them to detect known risks as they pass through the Internet gateway. New virus pattern files are typically released at the rate of several per week, while the protocol and IPS pattern files are updated less frequently.
The effectiveness of Cloud Edge depends upon using the
latest pattern files. Signature-based virus scanning works by comparing the binary
patterns of
scanned files against binary patterns of known risks in the pattern files. Trend Micro
frequently
releases new versions of the virus pattern and spyware pattern in response to newly
identified
risks. Similarly, new versions of the Phish pattern are released as new phishing URLs
are
identified.
Cloud Edge uses ActiveUpdate, the Trend Micro utility that
enables on-demand or background updates to the virus pattern file and scan engine,
spyware or
grayware pattern files. ActiveUpdate is a service common to many Trend Micro products.
ActiveUpdate connects to the Trend Micro Internet update server to enable downloads
of the latest
pattern files and engines. ActiveUpdate does not interrupt network services, or require
endpoints
to restart. Updates are available on a regularly scheduled interval or on demand.