Deleting your Facebook account is not enough to stop any apps from sending deep personal information about you to the social network.
Wall Street Journal found a wide variety of apps that send personal information to Facebook, even if you don't have an account. Health applications and real estate apps were discovered and sent a lot of information to Facebook, and the type of data may surprise you.
After looking at 70 of the most popular apps on iOS, WSJ 11 sent personal information to Facebook. The news comes just a few weeks after Facebook was captured distributing a VPN app for teenagers who were paid to share all their data. Apple pulled Facebook's enterprise certifications as payback. It hasn't stopped Facebook from sucking up as much data as possible from each source possible.
Watch for these apps
The tracking program of the period Flo Period & Ovulation Tracker allegedly shares data with Facebook as when users have periods or if they try to get pregnant. The best heart rate app for the iOS, Instant Heart Rate, sent the user's heart rate to Facebook. Another app, Realtor, sent listing information seen by users.
Most of these apps send information to Facebook without any prominent information to users. The apps use Facebook's analysis tools, called App Events, to track activity. Using App Events enables more targeted ads. The information sent is usually anonymous, but some info can be matched with users.
"Sharing information across apps on the iPhone or Android device is how mobile advertising works and is industry standard practice," Facebook said in a statement to CNBC . The problem is how apps use information for online advertising. We require app developers to be ready with the users about the information they share with us and we prohibit app developers from sending us sensitive data. We also take steps to detect and remove data that should not be shared with us. "