Old generation apple devices must be jailbroken to be secure.

[Barnsey]

Remember when apple patched the jailbreakme.com exploit with the 4.0.2 software update, and in the process was supposed to patch the PDF bug that allowed malicious code to be written to your ipod/phone/pad? Well it didn’t work on the original iphone or itouch since the update isn’t compatible with the first gen devices. The way to protect yourself? Jailbreak of course! Saurik aka. Jay Freeman just released a patch into Cydia for all generations of iphone, itouch, ipad with no need to update to 4.0.2 that protects you from the malicious code.