You Give Apps Sensitive Personal Information. Then They Tell Facebook.

Millions of smartphone users confess their most intimate secrets to apps, including when they want to work on their belly fat or the price of the house they checked out last weekend. Other apps know users’ body weight, blood pressure, menstrual cycles or pregnancy status. Unbeknown to most people, in many cases that data is being shared with someone else: Facebook Inc.
Read more: https://www.wsj.com/articles/you-give-apps-sensitive-personal-information-then-they-tell-facebook-11550851636?source=Snapzu