Apple says its T2 security chip, found in the 2018 Mac laptops, disconnects the device's microphone from the rest of the hardware whenever the lid is closed (Zack Whittaker/TechCrunch)

Zack Whittaker / TechCrunch:
Apple says its T2 security chip, found in the 2018 Mac laptops, disconnects the device's microphone from the rest of the hardware whenever the lid is closed  —  Apple's newest MacBooks include a new feature that makes it virtually impossible for hackers or spies to eavesdrop on your microphone.