Data harvesting and sharing by mobile apps is "out of control", University of Oxford researchers have warned. And according to the Financial Times, nearly 90% of free apps on the Google Play store share data with Google's parent company Alphabet
Many free apps track behaviour across many different digital services, which allows companies to build up a detailed profile of people using the app. This data can include age, gender, location, and information about other apps on a smartphone.
The data can then be used for a number of purposes including targeted advertising, credit scoring, or targeted political campaign messages, the researchers point out.