The latest iPhone jailbreak software, JailbreakMe which lets you jailbreak your iPhone 4 and other iPhone’s using iOS 4 is very easy to use, all you need to do to jailbreak your iPhone is point the Safari browser to JailbreakMe.com and follow the simple instructions.
According to PC World, JailbreakMe uses a security flaw in the way the iPhone 4 and other iOS 4 devices render Adobe PDF files, and other applications are also able to exploit the same security hole.
This could mean that the same security flaw that is used by JailbreakMe to jailbreak your iPhone 4 could also be used by hackers to run other commands on your iPhone.
via PC World
