And yes, while the webcam's LED will turn on whenever a session is initially started, new research has shown that malware can surreptitious piggyback into such existing sessions (FaceTime, Skype, Google Hangouts, etc.) and record both audio and video - without fear of detection. OverSight constantly monitors a system, alerting a user whenever the internal microphone is activated, or the built-in webcam is accessed. Macs, of course, are not immune malware such as OSX/FruitFly, OSX/Crisis, OSX/Mokes, and others, all attempt to spy on Mac users.
One of the most insidious actions of malware, is abusing the audio and video capabilities of an infected host to record an unknowing user.
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