Evasi0n's iOS 6.1 jailbreak offers millions of iPhone users almost complete freedom for the device, but it does so by penetrating security measures Apple has in place. Worms attacking the iPhone have been benign and annoying at worst, but the potential for hackers to sneak legitimately harmful software onto your phone is a possibility you might as well head off now.

After jailbreaking, the root password on all devices is set to "alpine" by default, and it takes some digging into your iPhone's software guts to change it.

Guide c/o Gotta Be Mobile.

To get started, download the Mobile Terminal app off of Cydia. Once that's done, close Cydia and open Mobile Terminal. The screen should open to a black typing interface similar to CMD windows on PCs, with your iPhone's name displayed. Type the following words in the brackets — but not the brackets themselves.

1. Type [su root]
2. Hit enter.
3. Type [alpine]
3. Hit enter.
4. Type [passwd]
5. Hit enter.
6. Type the password that you want to assign and will remember. No characters will appear on the screen.
7. Hit enter.
8. Type your chosen password again. Again, no characters will appear.
9. Hit enter.
10. Type [exit]
11. Hit enter.

This next part changes your mobile password. Mobile refers to the individual user's account, while root access goes all the way into the most basic inner workings of your phone. Changing both mobile and root passwords will secure your phone against unwanted intrusions better than just one or the other.

12. Type [passwd]
13. Hit enter.
14. Type [alpine]
15. Hit enter.
16. Type the password that you want to assign. No characters will appear on the screen, and this can be the same as your root password.
17. Hit enter.
18. Type your chosen password again. Again, no characters will appear.
19. Hit enter.
20. Type [exit]
21. Hit enter.