Experts warn of a brand new malware that may simply infiltrate iPhones. Current updates may defend older units – however you even have to put in them.
https://www.spiegel.de/netzwelt/gadgets/iphone-warum-man-jetzt-dringend-ios-updates-einspielen-sollte-a-1eb19009-25ac-4dc8-968f-daf2a06c4cf3#ref=rss