How does multi-factor authentication enhance security?

Multi-factor authentication enhances security by requiring multiple forms of verification before granting access. This approach adds layers of security beyond just a username and password, which can easily be compromised. The implementation of multi-factor authentication typically involves something the user knows (like a password), something they have (like a mobile device or security token), and sometimes something they are (biometric verification such as fingerprint or facial recognition).

By necessitating these varied credentials, even if one factor (such as a password) is stolen or guessed, unauthorized access is significantly more difficult because the attacker would still need to bypass the additional verification methods. This multi-layered strategy effectively reduces the likelihood of security breaches and protects sensitive information more robustly than relying on a single verification method.