But users have raised concerns about the practice after observing that they've been targeted with ads for products they've never expressed an interest in online.

Facebook Able to Listen to You at Home and Work

Many Facebook users have reported examples and alleged evidence that the app is listening in on their conversations.

https:// pjmedia.com/trending/cambridge-analytica-whistleblower-facebook-may-listening-home-work/

Three Facebook users sue over collection of call, text history

https:// ca.news.yahoo.com/three-facebook-users-sue-over-collection-call-text-004723682–finance.html