"Amazon inadvertently sent 1,700 audio files containing recordings of Alexa interactions by a customer to a random person [...] “Using these files, it was fairly easy to identify the person involved and his female companion; weather queries, first names, and even someone’s last name enabled us to quickly zero in on his circle of friends,” according to the report. “Public data from Facebook and Twitter rounded out the picture.”"

https://threatpost.com/amazon-1700-alexa-voice-recordings/140201/