More than 86% of the world’s iPhones can still be hacked with just a text

More than 86% of Apple iPhones in the world are apparently still vulnerable to a security flaw that allows a hacker to completely take over the device with just a text message, according to data from mobile and web analytics firm MixPanel.

A surprising number of people have not yet updated the iPhone’s mobile operating system — despite an urgent warning to do so coming from Apple last week — in light of a major security problem the company was forced to correct in iOS 9.3.5.