Today I received an account for checking my account status for a credit card. On first login I had to change to generated password they sent me to something of my own choice. However, their password policy seems a bit awkward to me. Translated from Swedish:
The new password must consist of at least 6 characters (a-z and 0-9) and may not have more than two of the same characters in a row. The password must contain at least one digit, but no more than three digits in a row. It must be no longer than 44 characters.
Having these onerous rules leads to two things, both reducing security:
None of my usual passwords match the rules (usually due to containing characters not oncluded in a-z and 0-9. That means I have to write down this password to have a chance of remembering it. In my case that means PasswordSafe, but for most people I suspecting it might mean a sticky note, and probably not in their wallet.
The rules actually reduce the number of possible passwords, leading to easier brute force attacks.
I don’t really understand the motivation behind them. If they has at least inhibited the common passwords people use, but no.tags: Security