MFA stands for “Multi-Factor Authentication”. It is a security mechanism that requires users to provide multiple forms of authentication to verify their identity before they can access a system, app, or service.
Typically, MFA involves something a user knows (such as a password), something they have (such as a smartphone), or something they are (such as a biometric factor like a fingerprint or facial recognition). By requiring multiple forms of authentication, MFA helps to increase the security of a system by making it more difficult for hackers to gain unauthorized access, even if they have managed to obtain one factor of authentication. It is widely used in online services, banking, and other industries that require secure access to data or systems. Apple smartphone’s fingerprint and facial recognition is a popular example of MFA.

Two factor authentication (2FA) is the most commonly used MFA. If an attacker manages to obtain one factor of authentication, which could be a password or a personal Identification number (PIN) , the attacker would still need a second form of authentication to breach someone’s data. After an attacker uses your password, a code may be sent to your mobile device whether it is through your email or your cell phone number. This will allow you to know when someone is trying to get into one of your accounts. It will ask for the code sent to your mobile device, which would stop the attacker from getting into your account or breaching data.

MFA is becoming increasingly popular and is now supported by many websites, applications, and services. It is an important tool for protecting sensitive information and ensuring the security of online accounts.