Tumblr app disappears on iPhone after child sex abuse images found on blogs

Tumblr's app has disappeared on the iPhone App Store after child sex abuse images were found on its platform. The company says it is acting urgently to remove the content and to have the app restored onto iOS. The app mysterious disappeared last week, being removed from the App Store with no announcement. While that didn't take it from existing phones, it meant that the app would not update and that nobody could download it newly. Uber has halted testing of driverless vehicles after a woman was killed by one of their cars in Tempe, Arizona.