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Beemer

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Since: May 09, 2005
Posts: 4



(Msg. 1) Posted: Sat Mar 17, 2007 11:14 am
Post subject: Is two anti-virus programs installed okay if I....(see inside)
Archived from groups: alt>comp>anti-virus (more info?)

I have McAfee installed and would like to try out AVG or Kaspersky. I know
that running two is bad but would it be okay if I disabled all the McAfee
programs in Security Center and then installed another program?

Beemer

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David H. Lipman

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Since: Jul 04, 2003
Posts: 1735



(Msg. 2) Posted: Sat Mar 17, 2007 7:30 pm
Post subject: Re: Is two anti-virus programs installed okay if I....(see inside) [Login to view extended thread Info.]
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From: "Beemer" <Beemer.DeleteThis@nowhere.com>

| I have McAfee installed and would like to try out AVG or Kaspersky. I know
| that running two is bad but would it be okay if I disabled all the McAfee
| programs in Security Center and then installed another program?
|
| Beemer
|

No, it isn't a good idea.

--
Dave
http://www.claymania.com/removal-trojan-adware.html
http://www.ik-cs.com/got-a-virus.htm

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nashraf.nasa

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Since: Feb 09, 2007
Posts: 14



(Msg. 3) Posted: Sat Mar 17, 2007 8:09 pm
Post subject: Re: Is two anti-virus programs installed okay if I....(see inside) [Login to view extended thread Info.]
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On Mar 17, 11:10 pm, "Beemer" <Bee... RemoveThis @nowhere.com> wrote:
> I have McAfee installed and would like to try out AVG or Kaspersky. I know
> that running two is bad but would it be okay if I disabled all the McAfee
> programs in Security Center and then installed another program?
>
> Beemer

Running two AV is fine as long as ONLY ONE real time scan is running.
You might want to use the other one as an on-demand scanner to get a
second opinion as no AV is 100% perfect. I would recommend you go for
Kaspersky instead of AVG.
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Carol

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Since: Mar 04, 2006
Posts: 16



(Msg. 4) Posted: Sun Mar 18, 2007 11:14 am
Post subject: Re: Is two anti-virus programs installed okay if I....(see inside) [Login to view extended thread Info.]
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On Sat, 17 Mar 2007 15:10:22 GMT, Beemer wrote:

>I have McAfee installed and would like to try out AVG or Kaspersky. I know
>that running two is bad but would it be okay if I disabled all the McAfee
>programs in Security Center and then installed another program?

I know conventional wisdom says 2 is okay, as long as only one is
scanning realtime, but I'll second David's "no" with more explanation.

Back in the day when XP first came out, a friend (trusted computer
knowledge) and I used to handle a good bit of malware and suspected
malware. She was also into testing to see if "conventional wisdom"
was true, and she was really giving her new XP the workout. She had 2
AV installed on both 98SE and XP, none scanning in real time since
this is most annoying when purposely handling malware. We always
disabled AV by stopping any files from starting, rather than trying to
stop them once started, or relying only on the program's settings to
do so. Literally, we searched with full knowledge that something
could be hiding, and they were as inert as we could possibly make
them.

She once had a malware file that was ostensibly known by both, but
neither detected on an individual file scan. Uninstalling one
(completely, with a third-party uninstaller program) would allow the
other to detect, and vice versa. This was repeatable multiple times,
on both her computers. There were no errors produced, no noticable
slowing of the scan time, no sign of other malware on the computer, no
sign at all of anything amiss. And perhaps worst for us, we could
never determine WHY.

I won't say which programs it was, because it was so long ago and I
don't believe it matters. This was around the time that a LOT of
malware started disabling AV, with the consequent accelerated attempts
by AV writers to keep their programs from being disabled. My point is
that these days, it can be almost impossible to disable AV completely
and permanently, but even if you could, you shouldn't trust either of
them.

Carol
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Art

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Since: Jun 06, 2006
Posts: 166



(Msg. 5) Posted: Sun Mar 18, 2007 12:14 pm
Post subject: Re: Is two anti-virus programs installed okay if I....(see inside) [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

On Sun, 18 Mar 2007 15:26:02 GMT, Ron Lopshire <notron DeleteThis @ovbl.org>
wrote:

>1) /almost/ guarantee that you will have problems trying to get KIS/KAV
>up and running with another AV installed, disabled or not.

How about if KIS/KAV is already installed and running fine? After
installing AVS, I've had Avira and Bit Defender free installed
with no problems. You can easily disable both modules in AVS
to disable its realtime functionality in order to give Avira a free
reign as the realtime scanner, if that's what you want (not that
I recommend that).

Art
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Ron Lopshire

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Since: Mar 28, 2006
Posts: 152



(Msg. 6) Posted: Tue Mar 20, 2007 3:07 pm
Post subject: Re: Is two anti-virus programs installed okay if I....(see inside) [Login to view extended thread Info.]
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Art wrote:
> On Sun, 18 Mar 2007 15:26:02 GMT, Ron Lopshire <notron RemoveThis @ovbl.org>
> wrote:
>
>>1) /almost/ guarantee that you will have problems trying to get KIS/KAV
>>up and running with another AV installed, disabled or not.
>
> How about if KIS/KAV is already installed and running fine? After
> installing AVS, I've had Avira and Bit Defender free installed
> with no problems. You can easily disable both modules in AVS
> to disable its realtime functionality in order to give Avira a free
> reign as the realtime scanner, if that's what you want (not that
> I recommend that).

Thanks, Art. It kind of surprises me that the AntiVir installation
didn't choke. As time goes on, more vendors are concentrating on
self-protection, and many AV apps see other AV apps as a threat. And the
better able an AV app is to protect itself, the more likely that it
would balk at another resident AV app being installed. This is
particularly true with remnants of NIS/NAV.

I have been impressed with AntiVir testing, but a couple of studies come
to mind.

DFK Threat Simulator version 2 (DFKTSv2)

http://www.morgud.com/interests/security/dfk-threat-simulator-v2.asp

AntiVir -> "Potentially vulnerable to a Power User service attack
(described below) and specifically targeted by the DFK Threat Simulator v2."

And from West Coasts Labs,

http://www.westcoastlabs.org/

AntiVir was not able to disinfect all of the test samples. This work is
kind of old, and so I am not sure that it is still apropos. I am also
keeping an eye on David Matoušek's work.

http://www.matousec.com/

His next round of testing will evidently involve AV apps. His last study
had some interesting results WRT third-party PFW vulnerabilities. (I
don't care about the leak tests, myself.) His work is controversial, as
many people question his ethics --- a business model that on the surface
appears to be based on /extorting/ money from security vendors.

The next time that I install AVS, I will have to try to duplicate your
setup. Maybe throw in 3 or 4 PFWs, too. LOL.

Ron Smile
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Beemer

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Since: May 09, 2005
Posts: 4



(Msg. 7) Posted: Thu Mar 22, 2007 6:19 am
Post subject: Re: Is two anti-virus programs installed okay if I....(see inside) [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

"David H. Lipman" <DLipman~nospam~@Verizon.Net> wrote in message
news:mlXKh.1039$8B1.140@trnddc04...
| From: "Beemer" <Beemer.DeleteThis@nowhere.com>
|
|| I have McAfee installed and would like to try out AVG or Kaspersky. I
know
|| that running two is bad but would it be okay if I disabled all the McAfee
|| programs in Security Center and then installed another program?
||
|| Beemer
||
|
| No, it isn't a good idea.
|
| --
| Dave
| http://www.claymania.com/removal-trojan-adware.html
| http://www.ik-cs.com/got-a-virus.htm
|
|
Dave,

My thanks to you and the others who followed with advice.

Beemer
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