A report a few days ago revealed that third-parties listen to parts of Siri voice recordings to improve the accuracy of the service. A former employee for one of this Siri grading companies claimed that humans “regularly hear confidential medical information, drug deals, and recordings of couples having sex,” among other things. The report followed stories about similar practices involving Amazon’s Alexa and Google’s Assistant. Actual humans can improve voice assistants by being allowed to listen in to voice recordings.