My XBOX One often switches on automatically, either when my Samsung Smart TV is switched on or completely by itself.
I would have adjusted the energy options so that it is not switched on automatically.
This only happens when connected to the HDMI connection provided for this purpose with the so-called Anynet function.
Both the console and your TV have settings in which this can be turned off.
But I can't look it up myself right now because I'm at work.
Apparently there's paranormal activity in your home.