Multifactor Authentication
Multifactor Authentication (MFA) is a security process that requires users to provide two or more verification factors to gain access to a resource such as an application, online account, or network. Instead of relying solely on a password, MFA enhances security by adding multiple layers of verification, which makes it much harder for unauthorized users to access a system.
MFA work :
When logging into an account, you first enter your password (something you know). Then, you may be prompted to enter a code sent to your phone (something you have). If the system also requires a fingerprint scan (something you are), that would represent a third layer of security.
1. Something You Know: A password, PIN, or answers to security questions.
2. Something You Have: A physical object like a smartphone, hardware token, or smart card.
3. Something You Are: Biometric data such as fingerprints, facial recognition, or voice pattern
Real-World Applications
- Online Banking: Many banks require both a password and a temporary code sent via SMS or email.
- Corporate Networks: Employees may need to use MFA to access internal systems, with tokens or biometric scans being common.
- Email Services: Platforms like Gmail offer MFA using passwords and authentication apps like Google Authenticator.
By incorporating multiple factors, MFA reduces the risk of a breach significantly, as an attacker would need to compromise more than just a single authentication method.
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