big data

Facebook users have been shocked to discover it stores the phone numbers of people who've never signed up to the site, along with the SMS and voice call histories of some users. But Facebook insists that users have explicitly given permission for ... such data storage. The site's data storage and sharing policies came back under the spotlight with the recent Cambridge Analytica scandal, when a journalist revealed that information gathered about users and their friends for a psychological study was shared without permission for use in political ad targeting. Since then, many users have been taking ... (view more)