“123456” overtook Password to become the worlds most popular and worst password in 2013. The worst password choices identified by Splashdata in 2013 include 123456, password, 12345678, qwerty, abc123, 111111, iloveyou, admin, monkey, shadow, sunshine, princess, 000000, password1 and password1. Adobe was unwittingly the main provider of raw material for the study after it lost information of some 48 million users in a devastating security breach at the end of 2013.”]
Source: https://www.bitdefender.com/blog/hotforsecurity/password-ousted-by-123456-as-most-popular-password/