https://techcrunch.com/2019/08/02/google-ordered-to-halt-human-review-of-voice-ai-recordings-over-privacy-risks/

A German privacy watchdog has ordered Google to cease manual reviews of audio snippets generated by its voice AI. 

This follows a leak last month of scores of audio snippets from the Google Assistant service. A contractor working as a Dutch language reviewer handed more than 1,000 recordings to the Belgian news site VRT which was then able to identify some of the people in the clips. It reported being able to hear people’s addresses, discussion of medical conditions, and recordings of a woman in distress.