Email scam: you receive an email that says it will show the world you pervert activity on your computer.
Another scam! Don’t open the email; delete it and ignore it. The pervert is the author of this scam.
BTW, it is a good idea to cover your camera lens with black electrician’s tape or any non-transparent tape (but don’t put the adhesive tackiness on your lens. You could tape a piece of paper over the lens). Remove the tape only when you are going to use the camera.
For more details, -> CAMERA