WhatsApp has introduced significant changes to its Privacy Policy, such as the sharing of user data with Facebook. Facebook acquired WhatsApp for $19 Billion in 2014, will use the information about WhatsApp users to target advertising. The company is offering a partial opt-out solution for the data sharing with Facebook as clarified in the following statement: Data will still be shared for other purposes such as improving infrastructure and delivery systems, understanding how our services are used, securing systems, and fighting spam, abuse, or infringement activities”]
Source: http://securityaffairs.co/wordpress/50631/digital-id/whatsapp-share-data-facebook.html