Apps on Apple and Android smartphones leak lots of users' information to third parties, research has suggested.
Researchers from the Massachusetts Institute of Technology (MIT), Harvard, and Carnegie-Mellon universities studied 110 apps available on Google Play and the Apple App Store.
They found 73% of the Android apps shared users' email addresses, and 47% of the iOS apps shared location data.
Privacy International said it was more evidence of how devices "betray us".
The study, Who Know What About Me? A Survey of Behind the Scenes Personal Data Sharing to Third Parties by Mobile Apps, tested 55 of the most popular Android apps and the same number of iOS apps.
Read more: http://www.bbc.com/news/technology-34732514
Image courtesy of hywards at FreeDigitalPhotos.net