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this post was submitted on 17 Jun 2024
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Privacy
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MFA - 1 = SFA
aka password login
MFA is not necessarily only 2 factors and single factor is not necessarily a password.
Sucks that I have to preface but people can be jumpy here. This is genuine curiosity, I'm actually asking, because it's really probably something I should already know. Can you explain the nuance to me please?
My understanding, speaking mostly of apps/websites, I know jobs can be much different:
Most places have the first factor as a password.
First factor (or "login") = username+password pair.
For the longest time that was all there was, "your login" was just a login, which meant a username and password combination. Then 2FA/MFA ("2 factor authentication / multi-factor authentication") came along in the form of username+password combo plus SMS/email/Google Authenticator/Yubikey/etc to verify as the 2nd form of authentication. You can have 3FA 4FA 5FA whatever if you want and if it's supported by the app/website. So 2FA is MFA, but MFA is not necessarily 2FA.
I know jobs can be set up a lot differently.
Yeah, that's basically right. With an opening line like mine (a formula), we're basically dealing in typical reddit/lemmy pedanticism.
I (somewhat ironically now) specifically chose the words MFA over 2fa when saying "mfa-1" as to be most encompassing from the get go because yes:
i do agree the 1st factor in a situation where its multiple factors is generally and common practice to be something you know.
Only under the assumption that 2>=M>1
And that neither F nor A = 0