There is a skin and a skull in front of it. Of course you can fry someone with microwaves, magnetrons are all sort of dangerous at high enough power (lasers ar

There is a skin and a skull in front of it. Of course you can fry someone with microwaves, magnetrons are all sort of dangerous at high enough power (lasers are too) but what they are not is selective and a cause of weird brain effects And also, the only thing you need to detect it is a very simple antenna, you can't hide radiation