A security process that requires users to provide two separate forms of verification before gaining access to an account, system, or application. It adds an extra layer of protection beyond just a username and password by combining:
–Something the user knows (e.g., password, PIN)
-Something the user has or is (e.g., one-time password (OTP) sent via SMS/email, authentication app code, fingerprint, or facial recognition)
Businesses use 2FA to enhance account security, prevent unauthorized access, and protect sensitive data against phishing, password theft, or hacking attempts.
Example use case: An online banking app requires customers to log in using their account password (first factor) and then enter a one-time password (OTP) received via SMS (second factor) before accessing their account.
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