Two-Factor Authentication for Crypto Accounts

What two-factor authentication adds

Two-factor authentication (2FA) requires a second piece of proof beyond a password before allowing account access — generally something you have (a device or physical key) rather than something you merely know. This means a stolen or guessed password alone usually isn't enough to access the account.

Common methods, and their relative strength

• SMS-based codes: convenient but the weakest common option, since phone numbers can potentially be hijacked via a SIM swap.
• Authenticator apps: generate time-based codes on your device without relying on your phone network, generally stronger than SMS.
• Hardware security keys: a physical device you must have and use to approve login, generally the strongest widely available option.

Why it matters especially for exchange accounts

A centralized exchange account is a common, high-value target, since it can hold significant funds behind just a login. Enabling the strongest 2FA method an exchange supports is one of the highest-impact, lowest-effort security steps available for that kind of account.

What to remember

• 2FA requires a second proof of identity beyond a password.
• Authenticator apps and hardware keys are generally stronger than SMS-based codes.
• Exchange accounts are common high-value targets and benefit significantly from strong 2FA.
• Store backup/recovery codes securely and offline.