Glossary
A security method requiring two independent proofs of identity, often a password plus a code.
Two-factor authentication (2FA) is a security approach that requires two distinct forms of verification before granting access — typically something the user knows (a password) and something they have (a device receiving a one-time code). It significantly strengthens account protection over passwords alone.
On the WhatsApp Business Platform, 2FA also refers to a registration PIN that protects a phone number from being re-registered by unauthorized parties. More broadly, businesses use WhatsApp to deliver the second-factor code in their own customer-facing 2FA flows.
Both senses share the same goal: ensuring that only the rightful owner can access an account or a number.
2FA blocks the vast majority of account-takeover attempts, and WhatsApp is a reliable channel for delivering the second factor.
Defuser AI can deliver 2FA codes via authentication templates, helping you secure customer logins on your WhatsApp Business API.
A security method requiring two independent proofs of identity, often a password plus a code.
2FA blocks the vast majority of account-takeover attempts, and WhatsApp is a reliable channel for delivering the second factor.
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