A new study showed that iPhone users tend to use easy-to-break passwords.
The top PIN codes include 1234, 0000 and 1111, which are easy guesses for hackers.
Other PINs follow typical formulas, like moving in a line or up and down the pad, and using codes like 5683, which represents the word love.
Rounding out the top ten codes were: 0852, 2580, 2222, 5555, 1998 and 1212.
With so many hacking incidents lately, experts said it's critical to keep passwords unique and secure.