We were able to navigate around a complete stranger’s private life without his knowledge, and the immoral, almost voyeuristic nature of what we were doing got our hair standing on end. The alarms, Spotify commands, and public transport inquiries included in the data revealed a lot about the victims’ personal habits, their jobs, and their taste in music. 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. Public data from Facebook and Twitter rounded out the picture.