All apple users please be alert, if you aren’t using the latest version of iOs then your apple device is in serious danger. Security vulnerabilities in almost every version of iOS and OS X are found, which allows your device for vulnerable attacks.
If you aren’t updated on the latest version of iOS and OS X, then you must update your device as fast as you can. Security bug that allows hacker to access your device by sending you an iMessage are found in almost every version of iOS and OS X, except the latest ones. This security bug is being discovered by a Cisco researcher. He revealed that, hacker will send you a .TIF file(which is a photo file) embedded with a text message and as you receive it, just after few seconds it starts action and executes a code, that provides access to the hackers, that they may do anything they want to do, with your device. They may make a hole in your internal storage and may steal your passwords and other important stuff. This security bug is harming many of the users who hadn’t switched to the new O.S.
So, for now, simple step to avoid this attack is that you must update your device to iOS 9.3.3 or EI Capitan 10.11.16, or if you aren’t able to do this update, then please turn off your iMessage.
Stay safe and be alert from these types of attacks, because they may harm you brutally. And never download or click on the unknown message or anything that has been received from unknown resource.