Just to clarify: Am I correct supposing that these people were indeed using their webcams for something like video chat when these captures were being taken? Because I find it very improbable that they (actively) invade the computers of 1.6m people. These people were probably online video chatting, so the NSA-/GCHQ-assholes were "only" eavesdropping on data being sent by the users themselves.
Anything else wouldn't make sense in my opinion. Many webcams show a light when in use, one that cannot simply be software-deactivated. It wouldn't take long until someone realized there was something strange going on.
So there's a good and a bad side to this: Owning a webcam/Kinect alone probably isn't a problem. If, however, you're using any kind of online video chat like Skype - then you're in big trouble, as they've probably taken periodic snapshots of you, too.







