How to protect against SIM swap attacks on 2FA?

[madmax]

Avoid SMS-based 2FA entirely for crypto accounts.

Use hardware security keys (YubiKey, Ledger) or app-based 2FA (Google Authenticator, Authy).

Notify your mobile provider of additional PIN/security layers for account changes.

[Nahid Hossen]

Use app-based 2FA like Authy or YubiKey — never SMS.

[EmTeam]

Lock your SIM with a PIN and keep personal data off social media. ️