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Two-Factor Authentication (2FA)
Authentication
A second “proof” that it’s really you.
Definition
Two-factor authentication (2FA) asks for two different kinds of proof to log in—usually something you know (a password) plus something you have (a phone code).
In plain English
A second “proof” that it’s really you.
Why this matters
Why it matters: If someone steals your password, 2FA can still block them from getting into your accounts.
Example
Example: You enter your password, then type a 6‑digit code from an authenticator app.
Apps Using Two-Factor Authentication (2FA)
Examples of apps that implement or relate to this privacy concept
