MUMBAI:  Google contractors regularly listen to and review some recordings of what people sayto artificial-intelligence system Google Assistant, via their phone or through smart speakers such as the Google Home.The company acknowledged that humans canaccess those recordings after some of its Dutch language audio snippets were leaked. Google product manager David Monsees acknowledged the leak in a blog post Thursday, and said the company is investigating the breach.“We are conducting a full review of our safeguards in this space to prevent mis conductlike this from happening again,” he wrote.More than 1,000 recordings were obtained by Belgian broadcaster VRT NWS, which noted in a story that some contained sensitive personal conversations — as well as information that identified the person speaking. Google says no user account information is associated with the recordings, and reviewers are instructed not to transcribe background conversations.

But VRT reporters could hear spoken home addresses in someof the recordings, and were able to track down the speakers. Some of theseconversations were not directed at Assistant and happened either as back groundnoise or as a mistaken recording when Assistant thought it was being spoken to,but wasn’t.Google says contractors listen to recordings to better understand language patterns and accents. Its user terms confirm recordings may be used bythe company, stating Assistant “records your voice and audio on Google services to improve speech recognition.”Monsees wrote that Google works with contractorsaround the world to analyse the recordings.

“These language experts review and transcribe a small set ofqueries to help us better understand those languages,” he wrote.

Google’s terms don’t explicitly say that people review therecordings, but do state that data could be analyzed as the company updatesservices or create new features.The company acknowledged earlier this year thatits reviewers listen to anonymous recordings in response to a Bloomberg reportrevealing that Amazon’s Alexa also uses contractors to listen to recordings.Amazon confirmed the report.Google’s recording feature can be turned off, butdoing so means Assistant loses some of its personalized touch. People who turnoff the recording feature lose the ability for the Assistant to recognizeindividual voices and learn your voice pattern.Assistant recording is actuallyturned off by default — but the technology prompts users to turn on recordingand other tools in order to get personalized features.

Google Assistant is available on more than 1 billiondevices, including smartphones and smart speakers. It’s made quite a dent inthe smart speaker market — still the primary place where people use voicetechnology — but still trails behind Amazon.