Google today defended its practice of having workers listen to users’ Google Assistant queries, following the leak of 1,000 voice recordings to a media outlet. Google also said it will try to prevent future leaks of its users’ voice recordings.

VRT NWS, a news organization run by a public broadcaster in the Flemish region of Belgium, said it “was able to listen to more than a thousand [Google Assistant] recordings” that it received from a Google subcontractor.

Google Assistant is used on Google Home smart speakers, Android devices, and Chromebooks.