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List:       security-basics
Subject:    Re: security-basics@securityfocus.com
From:       Ansgar -59cobalt- Wiechers <bugtraq () planetcobalt ! net>
Date:       2005-09-29 12:03:17
Message-ID: 20050929140317.C26465 () planetcobalt ! net
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On 2005-09-27 Lance.Druger@wellsfargo.com wrote:
> The XP firewall is unidirectional, Trojans and viruses can communicate
> out freely.

You can't reliably control outbound communication. If malware wants to
communicate outbound, it will. We have demonstrated in [1] (german page)
how an ordinary web-browser could be turned into a remote shell by
malware. The communication was not detected by any personal firewall.

[1] http://copton.net/vortraege/pfw/index.html

Regards
Ansgar Wiechers
-- 
"Another option [for defragmentation] is to back up your important files,
erase the hard disk, then reinstall Mac OS X and your backed up files."
--http://docs.info.apple.com/article.html?artnum=25668
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