said by djeremy:I haven't turned it off because I haven't really seen the need to since it's sandboxed from my home network.
And there is absolutely no way that someone could jump from the "free" wifi to yours? Sorry, I've been around long enough to know that nothing that is useful is 100% secure. I'm not saying I know how, I'm not saying that there is a way, what I am saying is a way may be discovered in the future and as with most security issues we won't know about it until months after the fact, if ever.
I own my own modem, so this don't affect me, but I would turn it off as I am unwilling to take a chance that Comcast did everything right from a security stand point.