You should take a look at this post from Android Police: http://www.androidpolice.com/2017/10/10/google-nerfing-home-minis-mine-spied-everything-said-247/ http:

You should take a look at this post from Android Police: http://www.androidpolice.com/2017/10/10/google-nerfing-home-minis-mine-spied-everything-said-247/ http://www.androidpolice.com/2017/10/10/google-nerfing-home-... Apparently there's a feature in the Google Home Mini that allows you to long press on the speaker to bypass the hot word detection ("Ok/hey Google"). Apparently there was a bug on this feature and random sounds could activate the listening of the Home, so it was recording data all day long.