It seems even worse than this - I'd argue your voice is personally identifiable information! The vast majority of these clips open with "Hey Google". Meanwhile

It seems even worse than this - I'd argue your voice is personally identifiable information! The vast majority of these clips open with "Hey Google". Meanwhile, Android allows you to personalize voice commands based on its ability to recognize that a specific person is the one saying "OK Google". Voice authentication has already reached high accuracy with a few seconds of unconstrained text, or a few words of fixed text. Voice identification on open sets takes more data, but sub-minute clips are still reasonably effective. At the very least, Google itself could make a credible attempt to identify whether the speaker in any voice clip heard by Google Home is a regular user, and plausibly de-anonymize users of OK Google. More alarmingly, we're told that about 1 in 500 Google Home clips is heard by a human, and this employee apparently shared "thousands" of clips with a news organization. It seems plausible that anyone with access to any large voiceprint database could attempt to obtain clips from a random contractor and de-anonymize the most interesting or salacious content.