Asmor said:It's the same reason there aren't many exploits for Linux, Mac OS or Mozilla. It's not because they're more secure than Windows or Internet Explorer, it's because not enough people use them for anyone to care.
Ehhhhh... Be very careful about muddying the waters with untrue statements. Both Linux and the Mac OS are more secure than Windows for numerous reasons, and the old "security through obscurity" argument has been soundly put in its grave. (Google for a few seconds and you'll find plenty of articles about this from people who really know security.)
DRM engenders feelings akin to the pro-Windows/anti-Windows arguments. Folks who feel strongly one way or another about the topic often end up quoting bogus data or sinking to less-friendly comments (see, "Congratulations, you're a pirate," above) without really taking the time to step back and figure out what's really up.
I'm pretty sure I've read that Windows Media's DRM has been cracked. Check Google again for information on that. Obscurity isn't the best security method. It'll only guard the gate for so long...