This post about passwords from Coding Horror reminds us that most password rules are bullshit.
The two things that matter:
- Longer is always better.
- Don’t let users create obviously bad passwords, like:
- Those that are on the top 50 or 100 most used password lists.
- Their email address.
- Their user name.
- The URL of the site.
That said, they also pick apart the length requirement in a world of unicode:
No, seriously, it does. I’ll go so far as to say your password is too damn short. These days, given the state of cloud computing and GPU password hash cracking, any password of 8 characters or less is perilously close to no password at all.
So then perhaps we have one rule, that passwords must not be short. A long password is much more likely to be secure than a short one … right?
What about this four character password?
I’m going to be updating how WordPress for Web Apps handles password requirements based on some of this.