A chain of Zero-day exploits was used to target a human-rights defender in the United Arab Emirates.  The researchers describe the process of simply texting a link to an iPhone, allowing them to remotely install malicious spyware to any iPhone from iOS 7 to the brand new iOS 9.3.4! Remotely jail-breaking an iPhone from a link or SMS is about the worst kind of exploit you can have.

And there is, of course, no doubt that OUR government makes use of these kind of back-doors all day long, but with this one being discussed in the wild, it is only a matter of time before it spreads like wildfire. Apple responded promptly to the notification given by the research team, and have pushed iOS 9.3.5 in response.

Anyway, go to: Settings->General->Software Update and get 9.3.5!