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From Wired News, available online at: 
http://www.wired.com/news/print/0,1294,42750,00.html 

IE Hole Surrenders Your Computer  
by Michelle Delio  

8:00 a.m. Mar. 30, 2001 PST 

A dangerous security hole has been discovered in Microsoft's Internet 
Explorer.  

Spanish security expert Juan Carlos Cuartango discovered the hole, 
which allows attackers complete access and control over any computer running 
any version of the Windows operating system and Internet Explorer Versions 5 
and 5.5.     

An attacker can gain control of another user's machine using an 
HTML-formatted e-mail with an attachment that contains a small remote-control 
program. The e-mail can be sent directly to the victim, or can be placed on a 
website. 

Unlike previous e-mail-activated attacks, the victim of this attack 
does not have to download the e-mail or click on the attachment for it to 
work. If a malicious user sends an affected HTML e-mail or hosts an affected 
e-mail on a website, and a user opens the e-mail or visits the website, 
Internet Explorer automatically runs the excecutable program on the user's 
computer. 

Typically, attackers will exploit the hole by sending a provocative 
e-mail to prospective victims in an attempt to lure them to the malicious 
website. 

Once a computer has been compromised, the attacker -- working from a 
remote location -- can do anything the computer's owner could do on the 
machine.  

"This is the biggest Microsoft Internet Explorer vulnerability I have 
ever discovered," said Cuartango, who details the hole and its ramifications 
for Windows computer users on his Spanish-language website.  

Microsoft was not immediately available for comment, but has released 
a "critical" security alert as well as a patch to fix the hole.  

Microsoft strongly advises "all customers using Microsoft Internet 
Explorer to install the patch immediately." 

The company says full documentation of the problem will be posted by 
Saturday.  

Cuartango said he alerted Microsoft to the problem on Feb. 14. 

"Microsoft responded immediately and their security team also started 
working immediately to produce a fix," he said.   

Related Wired Links:  

Inside Russia's Hacking Culture  
Mar. 12, 2001 

Got a Virus? Blame the Tightwads  
Feb. 28, 2001 

Earthlink Slow to Admit Attack  
Feb. 21, 2001 

The Internet: It's Full of Holes  
Feb. 6, 2001 

The Greatest Hacks of All Time  
Feb. 6, 2001 

Security Mavens Invaded by Trojan  
Feb. 1, 2001 

A Bad Day for Microsoft Sites  
Jan. 24, 2001 

Web Privacy, Security Weighed  
Dec. 9, 2000 

How MS Helped With Own Hack  
Oct. 27, 2000 

Scary Hole Found at ZKey  
Aug. 18, 2000 

Hacker Finds Hole in Netscape  
Aug. 7, 2000 

Copyright (C) 1994-2001 Wired Digital Inc. All rights reserved. 

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