Micro Snitch is a Mac utility that enables you to monitor the activity of your microphone and built-in camera. With its help, you can identify if unauthorized users are spying on.
The application lives on your Menu Bar from where you can change the way it operates, access log data, and check which devices are currently active on your Mac.
Micro Snitch also displays a small popup window on your screen that sits on top of any opened window on your desktop and lets you know if there's any dubious microphone or camera activity. You can always hide this screen from your desktop if needed.
An advantage is that you can share the log data with other users, directly from the program's interface. Simply click the app's Menu Bar icon, select the "Open Activity Log" option, and share the stored data with just one click. However, the app doesn't provide you with an option to export the log data to your local directories.
In conclusion, you should try this application on your Mac if you ever think that someone is spying on you through your camera or microphone. It's simple to handle, provides you with a detailed report, and comes with a fair price.