Two-factor authentication (2FA) enhances security by requiring users to provide two distinct forms of identification before granting access to an account or system. Typically, 2FA combines something the user knows—like a password—with something the user has, like a mobile device or a hardware token, which generates a time-sensitive code. This additional layer of protection makes it significantly harder for unauthorized individuals to gain access even if they know the password. By requiring both forms of identification, 2FA helps safeguard sensitive information and reduce the risk of identity theft and data breaches.