Good news, iPhone and iPad lovers - with the newest iOS 10.1 release, Apple has seemingly plugged the hole that allowed hackers to plunder iOS devices by just showing altered JPEG or PDF files. The only thing require from the user used to be viewing such a JPEG or PDF attachment in an email, message, or on a website. After that the hacker was able to run bad code on the device, and gain access to your device.
No more, though, as Apple has patched the exploit in the latest iOS 10.1 version, so that it is pushing users towards as fast an adoption of the update as possible. So, don't mess around with it, just update your iPhone and iPad, as, besides heightened security, you will be getting a plethora of new features to play around with.
source: Hacker News