How does multi-factor authentication (MFA) enhance security?

Multi-factor authentication (MFA) is essential for reducing the likelihood of unauthorized access because it adds an extra layer of security beyond just a password. By requiring multiple factors such as something you know (password), something you have (smartphone for receiving verification code), or something you are (biometric data), MFA makes it significantly more difficult for unauthorized users to gain access to the system or account. This additional layer of verification helps protect against various threats like phishing, password theft, and brute force attacks, making it a valuable tool in enhancing security measures.