Behind the Scenes Personal Data Sharing to Third Parties by Mobile Apps

The original long title has been truncated here - it was:

  Who Knows What About Me?
  A Survey of Behind the Scenes Personal Data Sharing
  to Third Parties by Mobile Apps

From the survey summary:

[researchers] tested 110 popular, free Android and iOS apps to look for apps that shared personal, behavioral, and location data with third parties

...

[researchers] show that a significant proportion of apps share data from user inputs such as personal information or search terms with third parties without Android or iOS requiring a notification to the user