Hi Cathy,
Real-time scanners should catch all malware that can directly affect
you. But it may decide not to scan that 500 MB zip file for performance
reasons. That file may contain a virus and a scheduled scan will detect
that. But there is no direct way you can be affected by that virus
without extracting the file, at which time the real-time scanner will
protect you.
Robert Sandilands
Sewell, Cathy wrote:
From discussions with the anti-virus vendors during various crises over the years, I've learned that the real-time scans are optimized for speed, while the scheduled scans are focused on thoroughness. This means, disturbingly, that malware can elude the real-time scan, yet be caught by the more-thorough scheduled scan. Hence the anti-virus vendors continued recommendations to run weekly scheduled local scans on all computers.
- CSewell
-----Original Message-----
From: Doug Fox [mailto:dfox168@hotmail.com]
Sent: Wednesday, December 28, 2005 2:28 PM
To: focus-virus@securityfocus.com
Subject: Do we still need scheduled scan?
If we have already implemented virus scan at the gateway, on the mail
server, on individual servers, and real time scan on workstations/laptops,
do we still need scheduled, e.g., weekly, scan on workstations and laptops
as well as servers?
Schdeuled scans really slow down some machines.
Any comments are appreciated.
Thanks,
Doug
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