Cloud Antivirus
The "fat client" architecture of traditional antivirus products relies
on heavyweight modules on endpoint systems to compare suspicious files
with threat signatures. A client/cloud architecture fundamentally changes this dynamic.
Only a very small client is needed on the endpoint.
This client finds new files and creates hashes (signatures) of
those files. The hashes are sent to a cloud-based server and compared
with a large signature database. Responses are sent back to the endpoint system.
The client/cloud architecture has tremendous benefits over traditional
antivirus products:
very little processing takes place on the endpoint, so there is no
impact on end-user productivity
there is no appreciable impact on bandwidth usage or network
performance, since only a few dozen hashes per system are exchanged over
the network (typically about 120KB per day) instead of thousands of new
threat signatures
the cloud-based system can host huge signature databases and use
massive servers to perform pattern matching, so signature comparisons
are more complete and faster
the cloud-based system gets real-time threat data feeds from test
laboratories, antivirus clearinghouses, security vendors, thousands of
enterprises and millions of users, so zero-day threats can be blocked as
soon as they are identified
roaming and remote users can be protected from zero-day attacks as
soon as they connect to the Internet
systems administrators don't need to spend time installing fat clients
or distributing signature updates to every endpoint system
Fat-client antivirus products are effectively obsolete. A client/cloud
architecture is the only way to make real-time signature-matching
practical and effective.
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