Live data from Hacker News

There’s no need to change passwords if they're robust, unique and not breached

tidbits.com

11–20 of 288 posts

Re: There’s no need to change passwords if they're robust, unique and not breached

#11

Perhaps surprisingly, US government guidelines exist, are pretty fantastic, and agree with the author: Memorized secrets SHALL be at least 8 characters in length if chosen by the subscriber. Memorized secrets chosen randomly by the CSP or verifier SHALL be at least 6 characters in length and MAY be entirely numeric. If the CSP or verifier disallows a chosen memorized secret based on its appearance on a blacklist of c…

6 characters in length seems a bit shoddy.

Re: There’s no need to change passwords if they're robust, unique and not breached

#12
I am unconvinced. What about persistent password bruteforcing? Rate limits? OK, bruteforcing is happening within those rate limits. That's how the password rots - it becomes less of a secret as many values are tried.

Key material rotation seems to be a sensible practice in general.

Re: There’s no need to change passwords if they're robust, unique and not breached

#13
post #6

Earlier quoted context omitted.

This has been a standard IT policy for companies in the US for like 20 years. Probably 3/4 of the companies I've worked at over that time anyway.

I think the question is do people naturally change old passwords without such policies. The policies are the problem and the industry has recognized it so they’ve moved away from those recommendations.

Yes, this basically. Sure if you have to change your password you will, but if there is nothing compelling you to do so why do it? And if yes, why.

Re: There’s no need to change passwords if they're robust, unique and not breached

#14
post #2

Do people even actually change their passwords when there is no need to do so, just because the password is old?

Yes. You can set your passwords to expire after a date (or a period) in KeePassXC. They will show up in your Health Check reports along with weak or non-unique passwords, possible leaks and more

https://keepassxc.org/blog/2020-08-15-keepassxc-password-hea...

Re: There’s no need to change passwords if they're robust, unique and not breached

#15
post #3
post #2

Do people even actually change their passwords when there is no need to do so, just because the password is old?

I update my passwords from time to time. I don't trust the organizations will always say if there is breach, know there is a breach, or actually know how far and wide a breach went.

Do you trust them to salt and hash your password using bcrypt? (rather than store it in plain text). Do you use a password manager to generate strong passwords that are at least 16 chars long? If you can answer yes to both, then it doesn't actually matter if your hashed password was part of a breach or not, the hackers won't be able to brute force it. (Of course if hackers manage to steal the private key with which your session cookie is encrypted, they can still log in as you - but then changing your password won't help either).

Re: There’s no need to change passwords if they're robust, unique and not breached

#17
post #9
post #5

Earlier quoted context omitted.

3 of the last 4 places I've worked had as policy that you must change your password every 6 month.

My current work forces updates every 3 months. It seems more like a security issue requiring this reset so often. This is because they create another problem when anyone you talk to will say they have their password and just increment a number for every password change. That way they’re not having to remember a whole new password every few months. So there’s never much of a change in anyones password during these rot…

I think this is an issue for things like a system login where you can't necessarily use 1Password or your equivalent. I have my work domain password in 1Password, and it's a huge pain in the ass when I need to use it in that context.

However, if you use a password manager, and have access to it, I think forcing key rotation on a short schedule actually increases security. The downside of course being that most people don't use a password manager, and most people use the same relatively unsecure password for everything.

Re: There’s no need to change passwords if they're robust, unique and not breached

#18

I am unconvinced. What about persistent password bruteforcing? Rate limits? OK, bruteforcing is happening within those rate limits. That's how the password rots - it becomes less of a secret as many values are tried. Key material rotation seems to be a sensible practice in general.

if your password is strong, this negates bruteforcing, unless if there is a good reason someone would want to hack you.

Re: There’s no need to change passwords if they're robust, unique and not breached

#19

Perhaps surprisingly, US government guidelines exist, are pretty fantastic, and agree with the author: Memorized secrets SHALL be at least 8 characters in length if chosen by the subscriber. Memorized secrets chosen randomly by the CSP or verifier SHALL be at least 6 characters in length and MAY be entirely numeric. If the CSP or verifier disallows a chosen memorized secret based on its appearance on a blacklist of c…

6 characters in length seems a bit shoddy.

Yeah, bump that to 8 and it's more reasonable. And if it's already required to be randomly chosen, why not 10?

Re: There’s no need to change passwords if they're robust, unique and not breached

#20
I am in the camp of requiring people to have strong passwords, and not requiring them to be changed - ever.

When you ask people to remember too many passwords, they start writing them down and/or forgetting them, which leads to other problems.

My oldest online account - btw it is a brokerage account at one of the big brokerage houses, where a great deal of my cash and investments sit - has not asked me to change the password in close to 25 years, which I find quite funny.

Post reply on HN