A new server has been found in the GTS not by hacking, I can't explain but its really complicated.
This post from Bulbanews should help you understand.
Fans have managed to exploit the Global Trade Station system used in the Generation IV games. Using the specifics of how a Nintendo DS connects to the Internet, they have become able to redirect a signal from the games to their own servers, allowing players to participate in non-Nintendo-sponsored events.
The Pokémon are broadcast through a personal server which pretends to be two different servers; the first acts as the DNS while the second acts as the GTS. If the "spoofed" server is manually entered as the primary DNS in a Pokémon game's Wi-Fi settings, any connections established will direct the game to this "spoofed" server, instead of the official Nintendo GTS server. Connecting to the Global Trade Station with these settings active will send players a fan-created event Pokémon and then immediately disconnect.
Like any official event, only one of each fan-created event Pokémon can be received by a game card via this method. It is possible to obtain these Pokémon using Diamond, Pearl, Platinum, HeartGold and SoulSilver versions.
It is important to note that this is not a hack of the GTS itself, and that Nintendo's GTS servers are not involved in these distributions. Fans should not worry about their games otherwise, as this is an exploit that they must specifically participate in, and cannot be done by accident.
There have not yet been any reports of games which become glitched due to this, however, Bulbanews advises its readers to maintain caution if they are to attempt this.
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This also made the fans create a site for these events,
http://gts.determinismsucks.net/
