Default [Q] ADB only over wIFI no USB

I am trying to find a way that I can only communicate over wifi with the adb on my device. So that for example if someone plugs in an USB cable to his pc, he should not be able to see my device as adb device. The only way to do something with adb should be over wify.
Is there any way to do that, or is the usb adb always on if adb is activated ?