There are still sites limiting password lengt to low values like 20 or 15. Don’t!
The why at [WayBack] Implement Proper Password Strength Controls: Password Length has been in place since October 2012, since when cracking passwords has become way faster, so risk at length 20 back then is now a risk at something like length 40.
Password Length
Longer passwords provide a greater combination of characters and consequently make it more difficult for an attacker to guess.
- Minimum length of the passwords should be enforced by the application.
- Passwords shorter than 10 characters are considered to be weak (NIST SP800-132).
While minimum length enforcement may cause problems with memorizing passwords among some users, applications should encourage them to set passphrases (sentences or combination of words) that can be much longer than typical passwords and yet much easier to remember.
- Maximum password length should not be set too low, as it will prevent users from creating passphrases. Typical maximum length is 128 characters.
- Passphrases shorter than 20 characters are usually considered weak if they only consist of lower case Latin characters.
–jeroen
via:
- [WayBack] “Maximum password lengte 15? Welkom in de 21e eeuw @eigenhuis https://t.co/FQueANeJNM #facepalm”
- [WayBack] Should I impose a maximum length on passwords?
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