Two-factor (2FA) or multi-factor (MFA) authentication is an added layer of strength to your protection. 2FA and MFA are essentially the same except, there’s an additional factor you’d need to fulfill to be able to login. It asks for your login + password + changing code which can be in the form of one-time PINs (OTPs) or a changing code from an authenticator app. It works by creating a layered defense that makes it much more difficult for a hacker to access your credentials. If one factor has been compromised, the hacker would still have to break through at least one more layer or barrier for them to successfully breach into your account.