Enlarge / You can't see it, but there is actually a microphone in here. (credit: Nest) Google's Nest smart home brand is in hot water this week after news surfaced (via Daring Fireball) that its home security system, Nest Secure, shipped with an undisclosed microphone. Google activated the microphone earlier this month for Google Assistant functionality, but that meant the device sat in users' homes for up to a year as an unknown, potential listening device. Nest Secure launched last year as a $500 home security system.