I work in the defense security industry and I've never heard of wholesale inclusion of any sort of spying mechanism in equipment sold to foreign entities. In specialized cases sure, that happens all the time. But nothing wholesale ... there is simply too much risk for discovery.
That's what I think. All they would be able to do is redirect traffic and that would get caught pretty quickly.
All things considered, compromising actually host pc/servers will provide much higher quality of information. -- "You're not supposed to be so blind with patriotism that you can't face reality. Wrong is wrong, no matter who says it."-Malcolm X