I worry about my AT&T router or, as they call it, residential gateway.
I should probably use my own behind theirs.
worth thinking about. I try to use end-to-end encryption for important things, so even if they let the hackers into my crappy vendor-provided routers (AT&T and Sprint), I am still relatively safe. But lots of things I do cannot be encrypted end to end.
(I assume that, if you are a home user, you don't really need routing (as you likely only have one "route") but actually need a firewall (to keep your home network protected from the outside world).
I have the same thoughts (UVerse 2Wire router) - I know you can change the password on it. I would really like to use my own router behind it (because the range will be better) but have heard it is very difficult to set up.