I have only heard that iPhone had 2 leaks so far in its security.
Android was just hit with a huge one, a russian virus sent on its own people, (so far).
I think all computers and smart phones are vulnerable. Apple I think has been blessed with low hits.
But.... On that military application of an iPhone (you can see the Home button clearly below the screen), perhaps Apple had a hand in helping create this package. Even I have a fictional plane with onboard iPads and MiniMacs for flight computers. The possibilities are endless...