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Apple said on Thursday that it is developing a fix for vulnerabilities that affect its iPhone, iPad and some iPod touch models,



From PCWorld:
The vulnerabilities became publicized with a new release on Wednesday of JailbreakMe 3.0, a framework that allows unauthorized applications to be installed in devices such as the iPhone.

Apple prohibits the installation of applications that have not been approved for distribution in its App Store. But hackers have used vulnerabilities in the iOS operating system that allow the phones to be "jailbroken," allowing applications not vetted by Apple to be used that are obtained through alternative application markets such as Cydia.
  Apple Developing Fixes for Dangerous IOS Vulnerabilities