Home › Glossary › Two-factor authentication

Two-factor authentication: definition and meaning

Two-factor authentication (2FA) adds a second proof of identity, such as a code, on top of your login.

Why it matters

It blocks most account takeovers even if a password leaks.

Related terms

• KYC
  KYC, or know your customer, is the identity check that regulated platforms perform before …
• Private key
  A private key is the secret that proves ownership of crypto in a wallet. Whoever has it co…

Guides that explain more

• Crypto Account and Wallet Security Basics
• How to Avoid Crypto Scams

Educational content only, not financial advice.