Two-Factor Authentication (2FA)

Simple Definition for Beginners:

Two-Factor Authentication (2FA) is a security method that requires users to provide two forms of identification to access an account, typically something they know (like a password) and something they have (like a verification code).

Common Use Example:

When logging into an online banking account, users may enter their password (something they know) and then receive a verification code on their phone (something they have) to complete the login process.

Technical Definition for Professionals:

Two-Factor Authentication (2FA) is an authentication method that adds an extra layer of security by requiring users to provide two different types of credentials during login. Key aspects of 2FA include:

• Authentication Factors: Combining at least two of the three authentication factors: something you know (password), something you have (token or device), and something you are (biometric data).
• Security Tokens: Generating one-time codes or using authentication apps to provide the second factor.
• Multi-Step Verification: Requiring users to go through a two-step verification process to access their accounts.
• Enhanced Security: Protecting accounts from unauthorized access even if passwords are compromised.
• User Experience: Balancing security with usability to provide a seamless authentication experience for users.