The hardware we use has a lot of secrets. One of them is Intel's Engine Management (IME), which is a co processor, integrated with the main chip, how the work is not known to the outside world, it is part of the underlying security. IME is found to always listen to the request, the device will also accept the packet when the packet. This discovery may have some kind of conspiracy theory.
Intel needs to make IME's work more transparent. AMD processor also has a similar hardware, called Security Processor Platform, the use of a ARM core, ARM compared to other platforms to be more transparent and more.