AppsSecurityEveryday

Glossary

Two-factor authentication

Also: 2FA, MFA, two-step verification

Two-factor authentication adds a second proof of identity beyond your password.

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Two-factor authentication adds a second proof of identity beyond your password. In everyday buying decisions, the useful question is not just what the spec says, but what it changes for comfort, cost, speed, safety, or battery life.

End-to-end encryptionPasskeyPhishing

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Updated Jun 26, 2026