Don't Delay - Patch today!
Apple has discovered - or been warned of 4 zero day exploits in the wild!
Hence the recommendation is patch immediately any Apple product you have - and this isn't just iPhones and iPad's - it's Mac's as well.
On iDevices, go to Settings > General > Software Update.
On a Mac, it’s Apple menu > System Preferences > Software Update.
Make sure you haven't a 'bad apple'!