You mean like automatic updates from Windows, or how does that work? Can Windows do remote procedures on our computers without asking or receiving permission?
No, think of it more like the remote help built into windows being used instead to mess things up.
Yes, it can operate without permission and somewhat hidden.
Except for when the remote operator moves your cursor.
It can be used for bad things, many virii do make use of remote desktop and the like to compromise your system.
Whether or not that is the case currently...do not know.
Could be browser helper objects, Trojans, JavaScript baddies, ActiveX baddies...
Or white lantern.
I have not heard solid info on what that does.
Thing to keep in mind: no machine is fully secure except one that is unplugged and not connected to anything.
Correction: the “law enforcement tool” Trojan is called magic lantern.