If your iPhone is already jailbroken using JailbreakMe tool, then you might want to know it will open a security hole as the result. JailBreakMe utilizes a PDF vulnerability in OS and now all people know it including the hackers or other bad guy, so there is chance they will launch malicious attacks to your iOS device via PDF file to gain access to your iPhone restricted area.

Apple has already aware of this problem and will be releasing the fix – but no official report about when it will arrive. Mean time you can protect your iPhone by doing this preventive acts, do not open or download any PDF from untrusted sources and then taking this advice from F-Secure: “Download a jailbreak application named PDF Laoding Warner from Cydia store” Of course changing SSH password is also smart deed to protect your iOS device.
But thanks to JailBreakMe because it we know this vulnerability.
This is invaluable. Thank you. I am implementing asap.
In its ongoing commitment of providing safer, faster and more stable PDF software tools, Foxit is taking a proactive measure in securing its 100 million PDF Reader users against the iPhone/iPad Jailbreaking application that utilizes malicious PDFs to hack the systems of unsuspecting users. Hackers are now trying to use these malicious PDF’s to access sensitive data on desktops. Foxit welcomes all PDF Reader users to download the latest version of the Foxit Reader 4.1.1 which addresses and resolves the issues related to the jailbreak hack.
To protect iPhone/iPad users from the jailbreak program that is being used to exploit iPhones in the way they handle PDFs, Foxit is preannouncing its soon to be submitted PDF Reader App for iPhone. Foxit believes that the upcoming release of its Foxit Reader for iPhone will provide a secure PDF reader for the iPhone. Foxit will be submitting this App within two weeks and it will have full PDF viewing capability. Just as with the Windows Reader, Foxit PDF Reader for iPhone will protect users against malicious PDFs.
very interesting , i love these kind of articles