Well, here is the article from the front page:
Tecmo: Hands Off Those Bikinis, Lads

In a message posted to Tecmo’s official forums earlier this week, the company warned Xbox hackers to stop developing "nude patches" for Dead of Alive Xtreme Beach Volleyball, the monument to human libido the company released for the Xbox in January.

"We’re watching you very closely! Please do not post things that infringe copyrights and other legal issues," the message reads. "So far we’re tracking one suspect; anybody care to be the second? Please do not post anything about nude patches and other hacked information or you will be punished to the fullest extent of the law."

The patches (several of which are in development) mess around with the textures used to build the bodies of DOAX’s lovely ladies to make them appear completely unclothed. Although screenshots (which we regrettably can’t repost here) have been going around the net for a few days, actually running the patch is a complex procedure—you need both a modified Xbox and several extra tools to install it correctly.

This isn’t the first time Tecmo’s run into hacker trouble with the Dead or Alive series—in September it won a court case against a Japanese CD-ROM publisher who built a Dead or Alive 2 editor that allowed randy gamers to remove Kasumi’s clothes.
Honestly I think since someone has purchased the software, tecmo really shouldn't be concerned with what they do to it. It's not like the nudity is included with the game, and the only side effect of this patch is that it is going to sell a whole lot more games for them.

So do they have the right to complain? Quake developers were thrilled as hell when people started making mods for their game as they realized it was moving more copies of their products off the shelves. Why should tecmo feel any differently?