as you say Troopy - no system is not able to be hacked. Govts are hacking and dropping malware on each other - major companies like Apple (like this one) IBM etc.......for every patch/fix/upgrade/new software - the hackers only see it as a fresh challenge to beat
For those who have Ithings and believe they are the ultimate for being malware free.
Apple App Store Hacked
xcode-ghost