iPhones run the risk of being controlled by hackers. The story has already been broadcasted to through the radio waves, the television, the internet as well as the newspapers.
This comes as no shock because it is hard to keep hackers out of any sort of device. It is just something that hackers do by nature. They love to invade people's privacy and therefore iPhone would have to consider these facts when they decide to make the next one or the upgraded version.
Link: iPhone SMS Attack: A Perfect Example Of Apple and AT&T