My compuer shuts down after a minuts, due to virus, can I ..

Netuser 58 wrote:
>
>
> The Prophecy wrote:
>
>> I
>> would get somebody else's opinion on the free virus scanner because I
>> have
>> never used any of them, I have Norton Antivirus 2004.
>
>
> Does Norton detect Trojans and worms before you open them?
> From what I have seen in this NG it seems that they have to be opened
> for detection.

A friend has Norton 2004 AntiVirus Professional and on the box it came
in, it says:
New! Scans compressed file archives before you open them and risk
infecting your computer (Not available on Windows Me/9

What about prior versions - it appears they cant' scan compressed files
if the feature is new in 2004 AntiVirus Professional.

Aren't worms and trojans compressed files?

It also says:
Automatically removes, viruses worms and trojans horses.


I'm wondering -Is that before or after they are opened?

I have the Trojanhunter program in addition to my AV program, but it
detects trojans only *after* they are opened.


>
>
>
 >> Stay informed about: My compuer shuts down after a minuts, due to virus, can I .. 

Thanks for your explanation. It cleared up the confusion about the "New"
feature.


Netuser 58



FromTheRafters wrote:
> "Netuser 58" <kedesh DeleteThis @netlimit.com> wrote in message news:40AF3A0F.1020608@netlimit.com...
>
>>
>>Netuser 58 wrote:
>>
>>>
>>>The Prophecy wrote:
>>>
>>>
>>>>I
>>>>would get somebody else's opinion on the free virus scanner because I
>>>>have
>>>>never used any of them, I have Norton Antivirus 2004.
>>>
>>>
>>> Does Norton detect Trojans and worms before you open them?
>>
>
> If a file is 'brought to the attention' of the scanner before you have opened
> it, it can detect (some) trojans, viruses, and/or worms before *you* open
> them. It could be as a scheduled scan, or prompted by some download's
> file creation. My scanner even detects some trojans on my system when
> I merely have browsed to the directory that they reside in. I assume that
> this is due to the fact that they are executable files and the browsing (done
> by Windows Explorer) accesses the file for icon information while my on
> access scanner is activated.
>
>
>>> From what I have seen in this NG it seems that they have to be opened
>>>for detection.
>>
>
> They do.
>
> ...but it is not *you* that is doing the opening - it is *it* doing
> so ... and before you have even had the opportunity in most
> cases. For instance, if you have some sort of e-mail scanning
> activated (my AV doesn't even have that option), the scanner's
> attention is being focussed on the downloaded file (or content)
> before it is presented to you as something you can open.
>
>
>> A friend has Norton 2004 AntiVirus Professional and on the box it came
>>in, it says:
>>New! Scans compressed file archives before you open them and risk
>>infecting your computer (Not available on Windows Me/9
>
>
> Marketing types don't always have a clue as to what they are
> spewing - and the clueful don't always bother to try to correct
> them. I think that maybe they are alluding to 'packed' files which
> are encapsulated with runtime unpackers, and not strictly to the
> normal compressed archive files. Nothing more than a guess on
> my part though.
>
> ...does it also advertise itself as a "solution"?
>
> Learning the art of understatement is not something they are likely
> to do. Why say " A welcome addition to your overall defense
> strategy" when you can say "Your complete anti-virus solution"?
>
> ...and why say "Still scans within some compressed archives", or
> "NEW Improved ability to scan within....", when they can make
> it sound like some new technology which only they possess, and
> is only available in their newe$t relea$e?
>
>
>>What about prior versions - it appears they cant' scan compressed files
>>if the feature is new in 2004 AntiVirus Professional.
>
>
> I wouldn't know about this because I use an older version and don't
> really feel the need to scan within archives. However, these runtime
> unpackers can be a cause for worry. Perhaps the new OSes allow
> for these to be intercepted whereas the Win9x/ME OSes do not.
>
>
>> Aren't worms and trojans compressed files?
>
>
> I'm sure that some are.
>
>
>>It also says:
>>Automatically removes, viruses worms and trojans horses.
>>
>>
>>I'm wondering -Is that before or after they are opened?
>
>
> Probably either, dependent on circumstances. It is possible
> that an AV can interrupt a download when it senses that
> its content is malicious.
>
>
>>I have the Trojanhunter program in addition to my AV program, but it
>>detects trojans only *after* they are opened.
>
>
> I am completely unfamiliar with that program, is it possible to
> direct that program to scan a file that you believe is suspicious?
> If you have it do so, and it detects the trojan, then it can also
> detect before *you* try to open it - but only because it does
> the opening. If it runs "on access" like a virus scanner does,
> then what you refer to as "opening" is really only bringing the
> file to the attention of the scanner. There is a major difference
> between "opening" and "executing" that many people don't
> understand. Opening a file can be for reading from the file,
> writing to the file, or executing the file.
>
> When you choose to execute a program (double-click in
> Windows parlance) you indicate a desire to open it for
> execution. The "on access" AV acts sort of like a traffic
> cop for all such requests of the OS, and instead opens
> it for reading*. It scans the file for indications that it is a
> known (to it) malware. Some may even attempt to "run"
> the program in an emulated environment in order to help
> it to determine its legitimacy. If nothing seems amiss, the
> AV then passes control back to the normal OS process
> of opening for execution. If something does seem amiss,
> an alert box usually appears and asks you for input.
>
> *I think that an executable image that is not yet scheduled is
> pretty much equivalent to a readable file for the purpose of
> this amateurish explanation. I'm not really sure exactly what
> the "on access" AV is scanning.
>
>
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