Micro Snitch

With Micro Snitch (was NOYB) there’s no doubt whether an application records audio through your Mac’s built-in microphone or if the camera captures video. This ultra-light menu-bar application operates inconspicuously in the background. It monitors and reports any microphone and camera activity to help you figure out if someone’s spying on you.

Fair enough, you might see the camera’s indicator light, but what if you are away from your computer? And for the microphone, there is no activity indication at all, so you won’t notice if the microphone is turned on even if you’re sitting right in front of your Mac.

With Micro Snitch you always know whether some app is currently using your microphone and its logging facilities allow you to reveal any suspicious activities later on.

• Menu Bar Icon -- Any current microphone or camera activity is displayed in the menu bar. The menu also shows a list of connected audio/video devices.
• Overlay -- An on-screen overlay is shown while the microphone or camera is turned on to make sure you won’t miss it even if the menu bar isn’t currently visible.
• Logging -- Never miss any microphone or camera activity, even in your absence. Every status change is logged to a file, so you can review it later to find suspicious activities.

Note: Micro Snitch was tested with as many different Mac computers and audio/video devices as we could get our hands on. The limitations we found are documented in the "Compatibility" section of the Micro Snitch FAQ, but there may be other compatibility issues that are not yet known.

Note: Now requires OS X 10.11 or later.

• Micro Snitch is now available in more languages: English, French, German, Japanese, Portuguese, Spanish and Chinese (both simplified and traditional).
• The announcement popover and the overlay now work properly with the new "Automatically hide and show the menu bar" setting in OS X El Capitan.
• Fixed a bug where somtimes the overlay would not animate to the screen’s corner after being dragged around.
• Micro Snitch now requires OS X El Capitan.