Maybe you remmeber the concerns secuirty experts had with JailBreakMe 2.0 regarding hackers using the PDF exploit for their malicious purposes, And now after the release of JailBreakMe 3.0, How can users protect themselves?
“Until Apple releases an update, jailbreaking will ironically be the best way to remain secure. ” comex said on jailbreakme.com
Comex released his own version of a patch to protect users against the exploit untill Apple resolve th issue presumably through an iOS update to 4.3.4
So all you have to do is , jailbreak your device, then launch Cydia from your springboard, Search for PDF Patcher 2 , Install the tweak and your good to go.
[via]