OK guys.....time to wake up to reality
Malware to do this has been around for years - I've even seen it demonstrated at a security exhibition something like ten years ago.
Its a relatively trivial matter to plant malware through some kind of crafted spear fishing on a machine, malware which can create a server on the machine which can activate and control the camera, and in some cases suppress the camera light, and even the front panel LED lights on the PC.
Obviously the machine is not in standby when this happens, but it looks like its in standby