Apple has urged users to install an emergency software update. This update was released mid-week by the tech giant, with the aim of fixing a vulnerability that hackers were exploiting.
"Apple is aware of this problem that may have been actively exploited," the American company said.
However, this company did not indicate whether it had information about the extent of this hacker intrusion.
If hackers use this flaw in the devices to see your location, read messages, view contact lists, and potentially even gain access to the microphone and camera, everything a user's phone has.
The update has been released for iPhones, iPads, and Mac computers that have sensitive operating systems.