How to search for evidence of Camfecting (webcam hacking) on MB?

Solution 1:

Objective See has an application that continuously monitors webcam and microphone activity called OverSight. It throws up a notification if either become active and has worked well for me.

Note: the developers rightly warn that this software may not catch all malicious use of the webcam or microphone.

https://objective-see.com/products/oversight.html

Solution 2:

It is "hard"wired... the firmware of the webcam has this behavior built in. To hack this one would need to rewrite the camera firmware to disable it.

There is very little chance of this actually happening to you. Apple does not document on how to do this, and the actually firmware is probably encrypted.

You seem to be unable to find evidence of this, but got you started on your search in the first place? Lack of evidence would mean this did not take place, yet you are searching anyway?

Article on the subject: https://jscholarship.library.jhu.edu/bitstream/handle/1774.2/36569/camera.pdf