Authentication
Ensuring that someone who claims to be someone really is
What are authentication methods?
Sth you know, sth you have, sth you are, sth you do, somewhere you are. Knowledge factor, possesion factor, inherence factor, action factor, location factor.
Something you know (knowledge factor)
Information that use can recall, e.g. password
Something you have (possession factor)
User presenting physical item e.g. phone or access card
Something you are (inherence factor)
Unique physical or behavioral characteristics of the person to validate identity, e.g. biometrics
Something you do (action factor)
User conducting a unique action to prove who they are
Somewhere you are (location factor)
User being in certain geographic location
What is MFA and 2FA?
2 or more factors used together
What authentication is used for?
Prevent unauthorized access, protect user data and privacy, ensure resource validity
