Detect Webcam & Microphone Activity on Mac with Oversight
Though Mac users don’t usually have to worry excessively about “camfecting” malware and spyware, some security conscious users may find it nice to know if a process or application is attempting to access their computers web camera or microphone.
With the help of a free third party security utility called Oversight, you can have your Mac alert you anytime an application or process tries to activate either recording device on the computer.