This Business Week Weekend Edition article tells how security software is under attack by the bad guys. It's not just Symantec/Norton, though this article focuses upon them. Every maker of security software, regardless of type, reports that their products are under attack.
I chose this article to post because it contains neither the gory details nor the long technical specifics, figuring everyone could read this short take and get an idea of what is happening. I think everyone ought to read this one and everyone can understand it.