At this weeks Black Hat security conference held in Las Vegas, researchers, Collin Mulliner and Charlie Miller of Independent Security Evaluators, have demonstrated an effective attack on an iPhone using a flaw in the way the iPhone handles SMS or text messages.  Your iPhone hacked via SMS!  By sending hundreds of special SMS control messages that are not normally visible to the iPhone owner the attacker can gain complete access to the iPhone until it is rebooted.

At the moment there is no patch from Apple to fix the problem despite Apple being notified over six weeks ago regarding the problem.

For you Windows mobile users you are not immune as the the attack can work against your devices as well.