You need to update your iPhone software. Like, now.

You need to update your iPhone’s software as soon as possible.

You probably got an update notification today for a new iOS version, but this time it’s best not to ignore it like we all usually do. Apple released an emergency security patch version iOS 9.3.5 after it was revealed that a company had been selling and exploiting the security holes in Apple products.

In short, hackers exploited vulnerabilities in Apples iOS which would have allowed them to hack any iPhone in the world.

According to The New York Times, “investigators discovered that a company called the NSO Group, an Israeli outfit that sells software that invisibly tracks a target’s mobile phone, was responsible for the intrusions. The NSO Group’s software can read text messages and emails and track calls and contacts. It can even record sounds, collect passwords and trace the whereabouts of the phone user.”

The update from Apple comes 10 days after they were tipped off by researchers from Citizen Lab at the University of Toronto’s Munk School of Global Affairs, and Lookout, a San Francisco mobile security company.

Or you could just go without your phone altogether, like Jessie did for week. Post continues after video…

“We were made aware of this vulnerability and immediately fixed it with iOS 9.3.5. We advise all of our customers to always download the latest version of iOS to protect themselves against potential security exploits,” said Apple spokesman Fred Sainz.

The vulnerabilities Sainz speaks of, which are called “zero days” because Apple didn’t know about them and had zero days to fix them, would have allowed the NGO Group access to your information through phishing text messages. The NGO Group had designed a tool that allowed them to mimic text messages from legitimate businesses and organisations like the Red Cross, Facebook, Google, and even the Pokémon Company. The kind of companies you wouldn’t think twice about opening something you received. Once clicked, the message would download malware to your phone, giving the hackers full access to your phone.

Hackers coming after Apple is nothing new, but a weapon this sophisticated that can completely take over an iPhone definitely is. Hacking will always be an issue for tech companies, so for now, it’s impossible for them to get ahead of the problem. For now, they can only fix things as they happen.

So for now, you should go update your iPhone.