Welcome aboard! Sounds like a virus, there are virus designed to take pictures and send it back to a server. That's how some of pictures end in wrong hand so I hope that you were not naked on front of your Sp3.
I don't see how its a virus. I've not been anywhere "shady."
Just scanned with defender...nothing.
Speaking from my rear-end, I think its driver issue or a Win8 issue. Maybe?
Thats not the only issue. Sometimes when I log in, it won't go to the desktop/start screen, it'll just show the background color on screen. Hitting the physical windows button does nothing. I have to hit the power button to turn off the screen and repeat the process of logging in. The most I had to do it consecutively to login successfully was twice.
Come on Microsoft, you control the hardware and software now. I can't blame Dell or HP!