Secure Your Jailbroken IPhone With a Password Change

So, you've jailbroken your iPhone, for whatever reason--because you want some functionality that's not available from Apple, or because you're a rebel--but you're feeling a little wary after this week's announcement of not just one but two exploits that affect jailbroken iPhone.

Not to worry. For one thing, neither exploit appears to be widespread. For another, both rely on the same assumption: that you haven't changed the password for the 'root' superuser on your iPhone. Root is basically the iPhone's administrator account, and it has access to everything on the phone, which is why Apple doesn't enable root access by default. Still, changing the password is pretty easy, and it will greatly enhance your security overall.

Presuming you have access to the Cydia repository, you can download the free MobileTerminal application, which gives you command-line access to your iPhone. Once you've installed the program, fire it up and follow these steps from the prompt.

That's it, you're all done. Now you can go back to the Home screen, secure in the knowledge that your iPhone will remain free of Rick Astley wallpaper--well, unless you decide to put him there yourself.