For owners of the iPhone, iPod touch or iPad, stay alert! Visiting a web page and loading a simple PDF file might actually kick off a security bug which affects all iOS 4-powered devices. The vulnerable is a no-brainer to exploit – all it needs is for the user to visit a web address using Safari, where the site will automatically load a simple PDF document that holds a font which hides a special program. Whenever the IOS 4-powered device decides to display the PDF file, said font will kickstart the stack overflow condition that allows secretly embedded code within the font to gain full control of your device. This would mean the program can do as it pleases inside your Apple device, including deleting files, transferring files, installing programs, you get the picture. Since prevention is better than cure, try not to visit any PDF links directly at the moment until Apple comes up with a fix.
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