What's a verification code, and why are they so important? Six-digit verification codes are a form of two-factor authentication, a process that helps keep your important online accounts secure.

What's a verification code, and why are they so important? Six-digit verification codes are a form of two-factor authentication, a process that helps keep your important online accounts secure.

Six-digit verification codes are a form of two-factor authentication, a process that helps keep your important online accounts secure.

It's one of the oldest tricks in the book - deceiving users into sharing the six-digit setup codes WhatsApp sends when switching phones, leading to account hijacks.