What I found was that (when I still had a Moto X), it would sometimes 'hear' the activation phrase although I didn't utter it and records the next few seconds o

What I found was that (when I still had a Moto X), it would sometimes 'hear' the activation phrase although I didn't utter it and records the next few seconds or so, until it decided that it cannot answer anything. So, in Google Dashboard I saw that it recorded some private conversation, though it was obviously not intentional.