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Two-Factor Authentication Definition: Two-Factor Authentication (2FA) is a security process that requires users to provide two different authentication factors, typically a password and a unique code generated by a token or sent to a device, to verify their identity and access a system or account.
Two-Factor Authentication (2FA) is a security process that requires users to provide two different authentication factors to verify their identity. These factors typically include something the user knows (like a password) and something the user possesses (like a mobile device or a security token). By requiring two different types of credentials, 2FA adds an extra layer of security and helps protect against unauthorized access to accounts or systems.