What Is Multi-Factor Authentication in Salesforce ?

MFA is an effective way to increase protection for user accounts against common threats like phishing attacks, credential stuffing, and account takeovers. It adds another layer of security to your login process by requiring users to enter two or more pieces of evidence — or factors — to prove they’re who they say they are. One factor is something the user knows, such as their username and password combination. Other factors are verification methods that the user has in their possession, such as an authenticator app or security key.