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NEW YORK - A new strain of one of the most virulent e-mail viruses ever
spread quickly worldwide Tuesday morning, causing fresh annoyance to users
worn out by last week's outbreak of the Blaster worm.
The new virus, named "Sobig.F" by computer security companies, attacks
Windows users via e-mail and file-sharing networks. It also deposits a
Trojan horse, or hacker back door, that can be used to turn victims' PCs
into senders of spam e-mail.
MessageLabs Inc., a company that filters e-mail for corporations, had
blocked more than 100,000 copies of Sobig.F by midday Tuesday, making it by
far the most active virus of the day.
"It's definitely spreading very quickly, just an incredible ramp-up so far
this morning," said Brian Czarny, marketing director at MessageLabs. The
variant is likely to be one of the more successful versions of a very
successful virus strain, he said.
The previous Sobig.A and Sobig.B variants are both on MessageLabs' list of
the biggest 10 e-mail viruses of all time.
The e-mail message that carries Sobig.F has the subject line "Re: Details"
and the message "Please see attached file for details." If a recipient
clicks on the attachment, which can have multiple names ending in the .pif
file extension, the computer will be infected.
The virus will then send itself out to names found in the victim's address
book and will use one of these names to forge a return address. As such, the
infected party may not quickly learn of the infection, while an innocent
party may get the blame for helping to propagate it.
Like all the other Sobig viruses, this version is programmed to
self-destruct after two weeks, in this case on Sept. 10.
The Blaster worm is still at large. It uses a published flaw in Microsoft's
Windows operating systems to spread via network connections, without using
e-mail. It slowed down the Internet and caused computer restarts worldwide,
but the attack it was programmed to carry out against a Microsoft Web site
on Saturday proved harmless.
----- Original Message -----
From: <jvc689@xxxxxxx>
To: <Realtraders@xxxxxxxxxxxxxxx>
Cc: <MedianLine@xxxxxxxxxxxxxxx>
Sent: Thursday, August 21, 2003 11:21 AM
Subject: [MedianLine] Strange Happenings on Posts and e-mails?
> I have been receiving strange posts entitled and e-mails from unknown
> parties with attachments:
>
> Thank You
>
> That Movie
>
> Details
>
> Plus I was e-mailed by Yahoo to confirm an unsubscribe which I did not
> initiate.
>
> Apparently there is a "sick" person out there and how do we remove the
> person.
>
> Sincerely,
>
> John
>
>
>
>
>
> To unsubscribe from this group, send an email to:
> MedianLine-unsubscribe@xxxxxxxxxxxxxxx
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
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