Older Mac webcams can spy on you, but don't tape yours over until you read this
Two researchers at Johns Hopkins University published a paper that has recently been widely reported throughout the Mac blogosphere. They claim to have been able to hack the webcam on older MacBook and iMac computers so the camera worked without activating the green LED. Don't tape over your webcam yet, though. I've had a look over the paper, and it's not as bad as you might think.