[dqv]

> Not intentionally though - I have my password stored in 1Password, so I know it's correct, yet every time I try to purchase something through bestbuy.com I trip some sort of ATO protection that falsely claims my password is invalid.

Are you sure it's not a maxlength mismatch? It is very common to have the "change password" field to have a different (or no) maxlength and then have the login page have a different maxlength. So you change your password to some 60 character password, then you log in where the maxlength is only 40 characters... wrong password! I actually have a policy now of having the maxlength stored in application config so it propagates to all password fields in my apps.

Edit: Just checked and yes there is a length mismatch (form to set password has maxlength of 54, but login page has no maxlength set). So if your password length is > 54 and 1Password doesn't automatically cut the password it stores to 54 characters or fewer, you won't be able to log in.

[coldblues]

I know a few sites, one of them being Spotify, that will lock your account based on "suspicious activity", lie that your password is invalid, and force you to reset your password.