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Password Rules Are Bullshit

blog.codinghorror.com

81–90 of 283 posts

Re: Password Rules Are Bullshit

#81
I agree 100% with these complaints about some of us don't have a choice. For example, PCI requires:

- Contain both numeric and alphabetic characters.

- Users to change passwords at least every 90 days.

- Password parameters are set to require that new passwords cannot be the same as the four previously used passwords.

Which go against the NIST guidelines. So how do you do things that are considered "best practices" when people like PCI require you to do them wrong?

Re: Password Rules Are Bullshit

#82
post #35
post #25

I agree with almost everything but the he loses me towards the end: > I had a bit of a sad when I realized that we were perfectly fine with users selecting a 10 character password that was literally "aaaaaaaaaa". In my opinion, the simplest way to do this is to ensure that there are at least (x) unique characters out of (y) total characters. Isn't that exactly what you're complaining about with your arbitrary passwor…

Yes and yes! Many throwaway accounts I have use some variation of the same password, because I don't care if someone hacks my HN or reddit or youtube account. I don't use my real name on any of them. If I lose control of it, I'll just make a new one. (Karma doesn't pay the bills, and I don't make money from my very excellent youtube comments; someone else does.) This is why all these accounts get an email account tha…

Two ways why I think E-Mails are useful at signup:

- Password Recovery (this can be optional though, for my sites it usually is)

- 'Legit Users', sending an email and having them confirmed through a code in them gives a bit more confidence in the user

Re: Password Rules Are Bullshit

#83

Somebody got into my bank account and attempted to steal some money. Luckily, we were able to stop it quickly and the bank had the money back in our account the same day. It was pretty upsetting so I sent a letter to them with a lot of questions about their system and eventually somebody from the inside called me. One of the questions I asked was why they limit password length. The (low) limit suggests that they were…

[deleted]

Re: Password Rules Are Bullshit

#84

So after explaining why [existing] password rules ere bullshit, author introduces his own ones.

After explaining why many common password rules are bullshit, the author presents the few remaining rules that aren't. Or rather: if you're going to subject your users to the bullshit that is passwords, here's a set of rules that optimize the security:bullshit ratio.

Re: Password Rules Are Bullshit

#85

I just yesterday had to sign up for some bullshit "secure email" service to read some email from my late uncle's bank. They had all the rules described in the article, and I could not use highly secure generated passwords. I finally settled on some super weak password with one of each requirement (char, case, symbol) tacked on to the end. Sigh. To make matters worse, the email looked just like a phishing attempt. Rig…

I think I have the same bank, it also asks "what is the answer to your security question" as a security question.

Re: Password Rules Are Bullshit

#87
post #35
post #25

I agree with almost everything but the he loses me towards the end: > I had a bit of a sad when I realized that we were perfectly fine with users selecting a 10 character password that was literally "aaaaaaaaaa". In my opinion, the simplest way to do this is to ensure that there are at least (x) unique characters out of (y) total characters. Isn't that exactly what you're complaining about with your arbitrary passwor…

Yes and yes! Many throwaway accounts I have use some variation of the same password, because I don't care if someone hacks my HN or reddit or youtube account. I don't use my real name on any of them. If I lose control of it, I'll just make a new one. (Karma doesn't pay the bills, and I don't make money from my very excellent youtube comments; someone else does.) This is why all these accounts get an email account tha…

I do the same thing. I have my crap/spam/don't care account (at yahoo.com). All the accounts that use that email address (which has zero ties to me - though you have to be careful over time not to leak information) also all use the same password. Couldn't care less if anyone ever ties two random and anonymous accounts on the Internet together. My important accounts have huge passwords from a password manager.

Re: Password Rules Are Bullshit

#89
post #35
post #25

I agree with almost everything but the he loses me towards the end: > I had a bit of a sad when I realized that we were perfectly fine with users selecting a 10 character password that was literally "aaaaaaaaaa". In my opinion, the simplest way to do this is to ensure that there are at least (x) unique characters out of (y) total characters. Isn't that exactly what you're complaining about with your arbitrary passwor…

Yes and yes! Many throwaway accounts I have use some variation of the same password, because I don't care if someone hacks my HN or reddit or youtube account. I don't use my real name on any of them. If I lose control of it, I'll just make a new one. (Karma doesn't pay the bills, and I don't make money from my very excellent youtube comments; someone else does.) This is why all these accounts get an email account tha…

well I really need to remember part two, for too long I just used an old email I no longer had as my primary account but it does incorporate my last name. time to get smarter. thank you for wake up

Re: Password Rules Are Bullshit

#90
Serious question: given those rules, are there more invalid or valid passwords within those constraints?

At first I thought the answer would be obvious but the more I thought about it and did some scribbling I couldn't come up with a good answer. Math is not my strongest skill.

Let's assume you had hashes of passwords following these rules and knew the hashing algorithm, could the rules be so restrictive they narrow the search space and actually make it easier to crack them than no rules at all?

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