Apps are sending your personal data to online trackers in violation of Apple's privacy rules. That's the conclusion of a Wall Street Journal investigation, which determined that a number of popular apps - such as Pandora and MySpace - transmit device and demographic data to advertisers without first asking the user for permission.
The Wall Street Journal tested 101 apps for iPhone and Android and found that 56 of them transmitted unique device identifiers (UDIDs) to a flock of advertisers without asking or even informing the app user. 47 of the evaluated apps send location data and five (including Pandora) transmit your personal details such as age and gender. Apple says that they vet apps before approving them on the App Store, but the Journal found that at least one - Pumpkin Maker - had managed to skirt the rules.