Online video site Revision3 suffered a massive DoS attack over the Memorial Day weekend. The culprit has ties to the RIAA and MPAA and this time its assault against BitTorrent was aimed at the wrong company...

Inside the Attack that Crippled Revision3 - Revision3 Blog

A bit of address translation, and we’d discovered our nemesis. But instead of some shadowy underground criminal syndicate, the packets were coming from right in our home state of California. In fact, we traced the vast majority of those packets to a public company called Artistdirect (ARTD.OB). Once we were able to get their internet provider on the line, they verified that yes, indeed, that internet address belonged to a subsidiary of Artist Direct, called MediaDefender.

Now why would MediaDefender be trying to put Revision3 out of business? Heck, we’re one of the biggest defenders of media around. So I stopped by their website and found that MediaDefender provides “anti-piracy solutions in the emerging Internet-Piracy-Prevention industry.” The company aims to “stop the spread of illegally traded copyrighted material over the internet and peer-to-peer networks.” Hmm. We use the internet and peer-to-peer networks to accelerate the spread of legally traded materials that we own. That’s sort of directly opposite to what Media Defender is supposed to be doing.
There's a lot more if you visit the link above.