Here is a link to exactly what is talked about.

In short, every time an engine or pattern file is updated, the incremental
scanning is set back to the start.  I still think the setting for
Incremental is good since any day there is not updates, (though rare these
days) only new files are scanned.


Dave Guerrero
Solutions Manager
Application Integration Group
Computech Resources, Inc.
1375 W. Main Avenue
De Pere, WI 54115
Phone:  920-336-1387 Ext. 264
Cell:  920-360-7225
Fax:  920-336-7728
e-Mail:  dguerrero@xxxxxxxxxxxx

> I just got off the phone with someone at Trend's support, and since it
> seemed that English was not her primary language I wanted to run this by
> the list to see if her statement was not what other's have observed.
> The reason that I originally called was that if I use incremental
> for DBSCAN would I miss viruses that a newer pattern would find.  For
> example I scan database xyz.nsf with pattern file 200 and it says it is
> clean.  However, since pattern file 200 is old it missed the gooneygoohoo

> virus.  Now, I've made no changes to xyz.nsf at all.  I perform an
> incremental scan on xyz.nsf with the latest and greatest pattern file
> (that will catch the gooneygoohoo virus), will it skip the xyz.nsf
> database since it was already scanned clean?  Her answer was no, since I
> have a newer pattern file, it will not do an incremental scan.
> This begs the next question:  Since we check for pattern files 4 times a
> day, and you can pretty much guarantee a new pattern file on a daily
> basis, is telling it to do an incremental scan on a weekly basis a waste
> because it's going to do a full scan anyway (new pattern file)?  She said

> yes.
> Anyone's experience differ from her observations?  Granted, her
> observations take more time, but currently I agree with the concept.
> Rob Berendt
> --
> Group Dekko Services, LLC
> Dept 01.073
> PO Box 2000
> Dock 108
> 6928N 400E
> Kendallville, IN 46755

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