It's one of the jobs of the T1/T2 chips in newer Macs. "as well as keeping tabs on the microphone and FaceTime HD camera to keep them safe from hacking"[1] [1

It's one of the jobs of the T1/T2 chips in newer Macs. "as well as keeping tabs on the microphone and FaceTime HD camera to keep them safe from hacking"[1] [1]https://blog.macsales.com/43360-imac-pros-t2-chip-what-it-is-and-what-it-does https://blog.macsales.com/43360-imac-pros-t2-chip-what-it-is...