gwernol writes "Slate has a well-written article on 'white knight" worms like Nachi that attempt to automatically patch security holes; Nachi try to patch the hole that MyDoom exploits. The article calls for Google and others to incent White Hat programmers to create better White Knights. But are 'good viruses' really a good idea? Nachi created almost as much bandwidth congestion as MyDoom. Do we really want programs jumping onto our systems and 'fixing' them without permission? What about a socially engineered worm that claims to be doing good?"