This.

In Germany, Kabel Deutschland can and does regularly update your cable modem remotely. There's a even a list of "censored websites" pushed down to your own router. They provide a Fritzbox but it's slightly more locked down (feature-wise) than normal so you can't even use it to a full potential.

I bought an Airport and stuck it behind it to at least isolate our home network from this backdoored mess. Good to know that Ubiquity provide a reasonable replacement.