Mobile Data: How a Quiz App Exposed Account Details for Millions

UpGuard has secured a publicly accessible cloud storage repository containing device data and personal data linked to millions of users of the TVSmiles multi-device advertising app. The German-based app brings gamified mobile advertising to users’ devices as part of the TV experience, offering quizzes and other advertising interaction. On May 8, an UpGuard analyst detected the Amazon S3 bucket, reporting the find to TVSmiles, which responded confirming the data had been made secure.