A security gap in iOS 7 allows people to make calls using your iPhone; all it takes is for someone to get to the emergency dialer, punch up a phone number, and press away at the call button. Yes, the phone will freeze and reboot, but the number will be dialed anyway. This includes international calls and premium numbers. And if this isn't bad enough, there is an exploit that allows a stranger to view all of the photos in your gallery...Source: http://www.phonearena.com/news/Exploit-on-iOS-7-allows-others-to-make-calls-with-your-phone-even-without-your-lockscreen-PIN_id47638
