As mentioned in this article, mozilla drops Internationalized Domain Names (IDN) specification due to a flaw in the system.
Back in 2001 some people thought it would be smart to allow unicode/utf in domainnames so you can actualy have a domain in your foreign language like russian or japanese (you can register them). However at the moment almost none dynamic website supports these kinds of urls unless you use special html characters like &#[number];.
phpBB and some other systems use the html characters to convert non-compliant ansii code if possible. However Dragonfly goes beyond this system by supporting unicode/utf out of the box so you can use any character easily.
But by using these kind of special characters or unicode there pops up a flaw in domain names since 2001...
Kaspersky Lab has detected a new worm which propagates using a vulnerability in phpBB, which is used to create Internet forums. The vulnerability is present in phpBB versions up to 2.0.11.
The worm overwrites all .asp, .php, .htm and .shtm files on infected websites with its own code.
All users of are recommended to apply the patch available in our downloads.
This new worm does not represent any threat to users visiting infected sites as it will not infect computers being used to view infected sites.
Available Information: Net-Worm.Perl.Santy.a
This exploit is as of today very critical since a internet worm has exploited the vulnerability and is hitting every website that uses PHP.
The PHP Development Team would like to announce the immediate release of
PHP 4.3.10 and PHP 5.0.3 .
These are maintenance releases that in addition to non-critical bug fixes
address several very serious security issues. All Users of PHP are strongly
encouraged to upgrade to one of these releases as soon as possible.
For changes since PHP 4.3.9, please consult the
PHP 4 ChangeLog .
For changes since PHP 5.0.2, please consult the
PHP 5 ChangeLog .
Effective November 12, 2004, the Internet Corporation for Assigned Names and Numbers (ICANN) will institute a new transfer policy for all accredited domain name service providers.
The previous ICANN policy allowed us to deny requests to transfer your domain names to another registrar unless you explicitly confirmed to us your intent to transfer. The new ICANN policy removes that protection. Starting November 12, when we receive a request to transfer your domain name to a new registrar, we will still attempt to contact you to confirm that you authorized the request. However, if you do not respond, or are not able to respond within 5 days, your domain name WILL be transferred.
To review the new ICANN transfer policy, please visit: http://www.icann.org/transfers/policy-12jul04.htm