Pins#abc.net.au

1234 is the most popular choice by a huge margin, accounting for nearly one in 10 of the millions of PINs we looked at.

Not surprising at all.

My password advice:

1. Use a password manager like 1Password or the built in one Apple now maintains
2. Have different pins and passwords for everything
3. Don't use birthdays or stupid number sequences like 1234
4. If you have the option for a pin to make it 6 digits instead of 4, go with 6