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Computer Security - Re: Trojans

 
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Old 08-06-2003, 03:04 AM   #1
Default Re: Trojans


On Tue, 5 Aug 2003 21:40:52 -0400, "Ryan Jackson"
<> wrote:

>Is there anyway to trace and prove that a trojan has infected your system.
>or can they be invisible?



What OS?

A very good trojan can be made effectively invisible by modifying all
operating system fuctions that would look for the trojan.

Under Unix, fo example, one would modify `ps` and a number of other
utility programs. Or, you could (theoretically) modify the kernel
directly.

However, this is difficult and most people are lazy.

Voyager



The Voyager
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Old 08-06-2003, 04:08 AM   #2
Ryan Jackson
 
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Default Re: Trojans

"The Voyager" <> wrote in message
news:...
> On Tue, 5 Aug 2003 21:40:52 -0400, "Ryan Jackson"
> <> wrote:
>
> >Is there anyway to trace and prove that a trojan has infected your

system.
> >or can they be invisible?

>
>
> What OS?
>
> A very good trojan can be made effectively invisible by modifying all
> operating system fuctions that would look for the trojan.
>
> Under Unix, fo example, one would modify `ps` and a number of other
> utility programs. Or, you could (theoretically) modify the kernel
> directly.
>
> However, this is difficult and most people are lazy.
>
> Voyager
>


Windows ME, or Windows XP




Ryan Jackson
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