How to understand that the camera of your Mac is watching you
In Denver, a conference was held by Virus Bulletin. It researcher in the field of security and a former NSA employee Patrick Wardle demonstrated the method by which malware for the Mac may crash into the video and audio stream from camera and microphone on our computers. Of course, Mac users are not too pleased to know that this is possible.
As soon as an application accesses the camera of your Mac, near the camera green led lights up. Thus you can understand that the camera of your computer is in the active state. To bypass this and turn on the camera, not including the diode, is very difficult. But if malware is designed to spy on the user, will monitor him during a conversation on Skype or FaceTime, the user won’t suspect a thing.
In his presentation Patrick Wardle proved that it is possible. In the moment when you’ll use the camera on your Mac using applications that you trust, the malware will also be able to access the image from your camera and sound from your microphone, and to transmit this information to the attacker.
He didn’t just find this method to spy on the user, but also developed a tool that will allow you to protect yourself from it. It the application works is very simple. It warns the user every time a new process attempts to access the camera. The app is called Oversight, and you can download it from this link.