Re: Worm vs a Trojan Horse -- differences?

From: Robert Moir (robspamtrap+msnews_at_gmail.com)
Date: 05/27/05 

Date: Fri, 27 May 2005 10:21:58 +0100

xz wrote:
> I know this much:
> A Trojan Horse is a DDOS attack made by maliciously changing some
> executable program -- like a MS Word T. Horse that infects PC w/ virus
> that sends other PC's requests.

No, it isn't. A trojan horse is a program that claims to do one useful job
but instead does another malicious one, either as well as, or instead of the
job it claimed to do.

It doesn't change any programs on the target, it doesn't "infect" anything,
and the launching of a DDOS attack is irrelevant to the definition of
"trojan horse".

> A Worm is a virus program that destroys data or utilize tramendous
> network bandwidth.

A worm is a subclass of virus (or arguably viruses are a subclass of worms,
but anyway) that spreads from machine to machine via the network. Destroying
data or using bandwidth are irrelevant to the definition of a "worm".

http://www.microsoft.com/windowsserver2003/community/articles/art_malwarefaq.mspx 

-- 
-- 
Rob Moir
Website - http://www.robertmoir.co.uk
Virtual PC 2004 FAQ - http://www.robertmoir.co.uk/win/VirtualPC2004FAQ.html
Kazaa - Software update services for your Viruses and Spyware.

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