It is also illegal to DDOS anyone, much less a legitimate business. We all remember the recent attack against Revision3 courtesy of none other than Media Defender itself. I'm tired of the media industry as a whole and their "shoot first, ask questions later" tactics.
Yes and Media Defender is being sued and will probably go bankrupt. I'm pretty sure that wasn't their business strategy.
There's a big difference though between having crappy software that accidentally implements a DDOS when blocked from access a torrent server (even though that was shady) and intentionally creating and distributing a virus. The penalties for the later are much harsher. --