What is the purpose of two-factor authentication (2FA)?

The purpose of two-factor authentication (2FA) is to add an extra layer of security beyond just a password. This method requires users to provide two distinct forms of identification before gaining access to their accounts. Typically, this involves something they know (like a password) and something they have (such as a mobile device to receive a code or a hardware token). This additional step significantly enhances security because even if a password is compromised, unauthorized access is prevented unless the second form of authentication is also obtained.

Using 2FA helps protect sensitive information and systems against common threats such as phishing attacks and password theft, making it a crucial component of modern cybersecurity practices.