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Date: Fri Oct 14 17:56:40 2005
From: mlande at (Mary Landesman)
Subject: IMLogic telling porkies about Yahoo

I can't speak to the IMLogic figures, but these are a few Yahoo IM worms of
which I am aware.


All but one of these (Gunsan) was reported by antivirus vendors after April

According to the data I've collected, MSN Messenger users (in large part
because of Kelvir) appear to be the most frequent targets of all Instant
Messenger threats, with 319 IM worms (that I know of) to contend with. AOL
Instant Messenger (AIM) users come in a distant second with 64 IM worms
(that I know of) targeting them. Both ICQ and Yahoo! Messenger take third
place with only 7 IM worms (that I know of) each targeting those chat

It's probably a better idea to do the research yourself rather than relying
on figures from the client vendors (or even from me, for that matter). This
is all information that is available in various antivirus vendor
encyclopedias; it just requires jumping through search hoops rather than
jumping to conclusions.

-- Mary

----- Original Message ----- 
From: "n3td3v" <>
To: <>
Sent: Friday, October 14, 2005 12:28 PM
Subject: Re: [Full-disclosure] IMLogic telling porkies about Yahoo

On 10/14/05, James Tucker <> wrote:
> Sorry for the extremety of my blunt response, but I have two things to
> 1. How the fuck do YOU know any more than they do? Just because you
> obsess over the security factors around a company with which you have
> no affiliation does not put you in any greater authority to make
> statements like those you made there.

I heard it from the horses mouth. Yahoo don't acknowledge the same
stats that IMLogic report on, and Yahoo say IMLogic's findings don't
match that of Yahoo's own stats of their network.

IMLogic can report on something and claim a worm is attacking, but
when Yahoo's people go and look at their network, nothing is actually
taking place!

How many malicious messages do IMLogic record, before they decide
theres a wide spread attack? Thats my question, because even with
reports of worms on Yahoo, none have been seen by Yahoo or users..

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