Whitehat botnets (ha ha only serious)

I think home-user-level security "maintenance" contracts are a good idea, and some ISPs provide something along these lines (I think -- I wasn't much interested in Verizon's security plan, since it's for Windows). Most people don't maintain their own cars; some do, but they're more technically knowledgeable. People also install alarm systems in their houses. I think there's definitely a way to market this to the general public. The only real hitch is how the liability is handled if a compromise does occur.