https://www.engadget.com/2018/04/10/mark-zuckerberg-facebook-doesnt-use-your-mic-for-ad-targeting/
Facebook, Social Media Privacy, and the Use and Abuse of Data
https://www.commerce.senate.gov/public/index.cfm/hearings?ID=E7C85E5C-BBA9-4AD9-861D-85B7340BBDFB
ref - https://tech.slashdot.org/story/18/04/11/0450246/zuckerberg-facebook-doesnt-use-your-mic-for-ad-targeting
Facebook, Social Media Privacy, and the Use and Abuse of Data
https://www.commerce.senate.gov/public/index.cfm/hearings?ID=E7C85E5C-BBA9-4AD9-861D-85B7340BBDFB
ref - https://tech.slashdot.org/story/18/04/11/0450246/zuckerberg-facebook-doesnt-use-your-mic-for-ad-targeting