President Obama Launched A Twitter Account But Is His iPhone Secure?

President Barack Obama, once the highest-ranked member of the BlackBerry faithful, perplexed many on Monday when he posted the first tweet from @POTUS on an iPhone.
As it turns out, the iPhone in question belongs to the Executive Office of the President, not Obama himself.
Despite existing safeguards, several security observers responded to the president's tweet with concerns.
Jonathan Zdziarski, an iOS security researcher who sent a tweets to @POTUS, explained that though Apple has escalated iPhone security in recent years, the phone can still be hacked in many ways.
Zdziarski added that if the president is only going to use the iPhone for tweeting, the security concerns probably aren't as great.