OverSight is described as 'Mac malware often spies on users by recording audio and video sessions...sometimes in an undetected manner' and is an app in the security & privacy category. There are 2 alternatives to OverSight for Mac. The best OverSight alternative is Micro Snitch. It's not free, so if you're looking for a free alternative, you could try Micro Sniff.
Ever wondered if an application records audio through your Mac’s built-in microphone without your knowledge? Or if the camera captures video for no good reason?
With Micro Snitch there’s no doubt anymore.
An ultra-light macOS utility that notify whenever your micro-device is being used - dwarvesf/micro-sniff
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