A friend can also verify the fact, because a different employee told him the same. And both have backdoors, I know that other router manufacturers also integrate backdoors from a source who works at such a company. That and the Telecom's Speedport router are the most popular routers by far in Germany. That's why I wiped and flashed it with an alternative image. I hacked my Fritz!Box (yeah, a bad name for a german router) and I'm entirely sure that it has a backdoor integrated too.